DEV Community: Panayiotis Georgiou

Completed Hacktoberfest 2025

Panayiotis Georgiou — Sat, 01 Nov 2025 13:43:33 +0000

If you’d asked me a month ago whether I’d be contributing to multiple open source projects again this year, I’d probably have said, “Not sure I’ll have the time.”

But here we are — challenge completed

https://holopin.io/@georgioupanayiotis

Awarded to Hacktoberfest Supercontributors who land 6+ accepted PRs/MRs! The first 10,000 people to reach the 6PR milestone also receive a special t-shirt code from DigitalOcean.

This year, I focused on small but meaningful contributions: improving responsive design , fixing accessibility issues , and helping with documentation — things that often go unnoticed but make a real difference.

Here’s what I learned along the way:

Contributed on more than 6 open source projects.
Learned how to read and test unfamiliar codebases.
Got more comfortable with Git & GitHub workflows.
Built confidence collaborating with open source maintainers.

The result? 6 badges unlocked , and another awesome Hacktoberfest experience added to the list.

Big thanks to the open source community for always being so welcoming — and to everyone who encouraged me to keep contributing.

Already looking forward to Hacktoberfest 2026!

Previous years:

2024 | 2023 | 2022 | 2021

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Hacktoberfest 2024 - Completed 🏆

Panayiotis Georgiou — Tue, 22 Oct 2024 11:56:54 +0000

For the sixth consecutive year I have just completed the #hacktoberfest2024 challenge with 11 Pull Requests (5 successfully merged + 6 still pending) 💪

It is with great pleasure to be involved in Hacktoberfest and contribute on several people projects.

✅ DONE #Hacktoberfest #OpenSource #hacktoberfest2024

Github: https://github.com/georgioupanayiotis
Holopin: https://www.holopin.io/@georgioupanayiotis

hacktoberfestchallenge

Let's connect:
-> Youtube
-> Facebook
-> Twitter
-> Github

😉 That’s it for now. Keep it up 💪

React Brussels 2024: Elevate Your React Skills

Panayiotis Georgiou — Tue, 15 Oct 2024 08:03:06 +0000

The global React community is buzzing with excitement for one of the most anticipated events of the year—React Brussels 2024. Whether you’re a seasoned developer, a newcomer to React, or someone looking to deepen your knowledge of JavaScript and web technologies, this conference has something to offer for everyone. Set in the vibrant city of Brussels, this event brings together thought leaders, industry experts, and passionate developers to dive into all things React. Here’s why you should mark your calendar and make your way to React Brussels this year.

Buy Tickets

1. Cutting-Edge React Insights

React Brussels isn’t just another tech conference—it’s a playground for those passionate about React and its ecosystem. With an incredible lineup of speakers, attendees will gain access to deep insights into the latest React trends, tools, and best practices. Whether it’s learning about new features in React, discovering advanced patterns, or understanding how to optimize performance, this conference ensures you’re always ahead of the curve.

Expect talks on everything from React 18 , Server-Side Rendering (SSR), to exploring the power of React Server Components. With workshops led by experts, you’ll walk away with hands-on experience that you can implement in your projects immediately.

2. Network with Industry Leaders

Conferences like React Brussels provide a golden opportunity to connect with some of the brightest minds in the web development world. Share ideas, solve coding problems, and expand your professional network by engaging with speakers, sponsors, and other attendees. Whether you’re looking for mentorship, collaboration opportunities, or even new career possibilities, React Brussels is the place to be.

3. Engage in Hands-on Workshops

In addition to speaker sessions, React Brussels offers interactive workshops that cater to various skill levels. These workshops are designed to provide hands-on experience in solving real-world React problems. Whether you’re working with Hooks , building complex React Native apps, or leveraging GraphQL with React, these workshops give you the chance to experiment with new technologies in a collaborative environment.

4. Discover the Broader React Ecosystem

React isn’t just a front-end library anymore—it’s an entire ecosystem. React Brussels offers attendees a comprehensive look into the tools and libraries that complement React, such as Next.js , Redux , React Native , and TypeScript. The event also focuses on topics like accessibility , performance optimization , and best practices in React architecture.

With a mix of talks ranging from introductory to advanced, you’ll find content that resonates with your current projects and inspires you to push the boundaries of what’s possible with React.

5. Explore Brussels, the Heart of Europe

React Brussels 2024 isn’t just about code—it’s also an opportunity to explore one of Europe’s most dynamic and culturally rich cities. Famous for its history, architecture, and delicious Belgian waffles, Brussels offers a wonderful setting for attendees to enjoy during and after the conference. Make sure to take some time to experience its world-renowned museums, historical landmarks, and, of course, the iconic Atomium.

6. Support and Celebrate the Open-Source Community

React Brussels places a strong emphasis on supporting the open-source community that has built React and its ecosystem. As you attend the sessions, you’ll also learn about the importance of contributing to open-source projects, helping to maintain and improve the tools that developers around the world rely on.

Participating in this event allows you to engage in discussions about the future of React, share your contributions, and get inspired by others in the open-source community.

7. The Perfect Place for Team Building

If you’re part of a development team, React Brussels can be an excellent opportunity for team building. Many companies send their developers to conferences like these to upskill, gain inspiration, and bring back fresh ideas. Attending with your team allows you to collaboratively experience the content and later implement learnings into your projects.

Conclusion

Whether you’re looking to enhance your skills, meet fellow React enthusiasts, or stay updated on the latest trends in web development, React Brussels 2024 is an event you won’t want to miss. It promises to deliver an unforgettable experience for developers at every level, in one of Europe’s most exciting cities.

Don’t miss out on the chance to immerse yourself in all things React! Register now and secure your spot at React Brussels 2024.

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Hacktoberfest 2024: A Celebration of Open Source and Community

Panayiotis Georgiou — Tue, 01 Oct 2024 12:01:17 +0000

As the air grows cooler and the leaves begin to change, October brings not just the promise of fall but the excitement of Hacktoberfest 2024! Organized by DigitalOcean , along with GitHub and DEV , Hacktoberfest is a month-long event that unites developers and open-source enthusiasts worldwide. Whether you’re a seasoned programmer or just beginning your coding journey, Hacktoberfest offers the perfect opportunity to contribute to open-source projects, learn new skills, and make a meaningful impact in the tech community.

What is Hacktoberfest?

For those unfamiliar, Hacktoberfest is an annual event that promotes contributions to the open-source ecosystem. Over the course of October, participants are encouraged to submit pull requests (PRs) to repositories on GitHub and GitLab. Once you register for the event, completing a certain number of pull requests (traditionally four) can earn you some awesome swag, like a limited-edition Hacktoberfest T-shirt or planting a tree in your name.

But Hacktoberfest is more than just about earning swag; it’s about learning , collaboration , and community. Open-source projects thrive on contributions, and Hacktoberfest gives everyone—regardless of experience level—the chance to get involved, make connections, and grow as developers.

Who Can Participate?

Anyone! Whether you’re a front-end developer using React and JavaScript , a DevOps engineer working with Kubernetes , or a complete beginner with basic knowledge of HTML and CSS , there’s something for everyone. Contributors can help with code, documentation, translations, testing, or even submitting bug reports. Every contribution counts!

Here’s why you should participate

Gain Experience : Working on real-world projects helps you improve your coding and problem-solving skills.
Expand Your Network : You’ll meet and collaborate with developers from around the globe.
Boost Your Portfolio : Open-source contributions are highly valued by employers. Participating in Hacktoberfest can set your portfolio apart.
Make a Difference : Your contributions can help improve tools and projects that people rely on every day.

How to Get Started

Register on the Hacktoberfest Website: Head over to the official Hacktoberfest website to sign up. You can sign in with either your GitHub or GitLab account.
Find a Project : Look for repositories tagged with the hacktoberfest label on GitHub or GitLab. Choose projects that match your interests or are beginner-friendly if you’re just starting.
Submit Your Pull Requests : Make meaningful contributions to the project by fixing bugs, adding features, or improving documentation. Aim to submit at least four PRs to earn the swag!
Stay Involved : Hacktoberfest isn’t just about code. Stay active in discussions, provide feedback, and encourage others to contribute.

Tips for Success

Start Early : With thousands of contributors worldwide, some repositories fill up fast. Getting an early start ensures you have plenty of time to contribute.
Read the Guidelines : Always review a project’s contributing guidelines and code of conduct before submitting a PR.
Make Meaningful Contributions : Small contributions matter, but avoid submitting low-quality PRs just for the sake of it. Aim to provide value to the project.
Ask for Help : If you’re stuck or unsure about something, don’t hesitate to ask maintainers or the community for guidance. Open-source communities are often very supportive.

Key Dates

October 1st – October 31st : The official Hacktoberfest contribution period.
November : PR reviews and rewards distribution.

Why Open Source Matters

Open-source software powers much of the world’s technology. From operating systems like Linux to frameworks like React , these projects rely on community contributions to evolve and improve. By participating in Hacktoberfest, you’re not just learning and coding—you’re joining a global movement that drives innovation and accessibility in technology.

So, whether you’re aiming for the T-shirt, eager to plant a tree, or just looking to level up your coding skills, Hacktoberfest 2024 is the perfect chance to dive into the world of open source.

Get ready to hack for good!

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Past Editions

2023 – Hacktoberfest

2022 – Hacktoberfest

2021 – Hacktoberfest

2020 – Hacktoberfest

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React Alicante 2024: A Global Gathering for React Developers in Spain

Panayiotis Georgiou — Wed, 18 Sep 2024 08:20:28 +0000

React Alicante 2024 is set to be an exciting event for React enthusiasts, taking place from September 19th to 21st, 2024 in Alicante, Spain. The conference will feature a mix of workshops on Thursday, followed by two days of talks on Friday and Saturday, with 30 prominent speakers sharing insights into the latest in React.js development.

The venue is the Palau de Congressos d’Alacant , a modern location that will host developers from around the world. Some of the key speakers include notable names like David Khourshid , the creator of Stately, and Evyatar Alush , a front-end engineer at Meta and creator of Vest validations framework. Whether you’re interested in front-end engineering, open-source development, or the latest trends in React and JavaScript, this conference promises valuable takeaways.

In addition to the educational sessions, React Alicante offers a great opportunity to network with developers, industry leaders, and companies from across the globe.

Get Tickets now

Schedule

On Thursday you will have the chance to join two introductory workshops to React and React Native. The conference itself will take place on Friday and Saturday, with 30 talks given by 30 great speakers. Get your tickets before it is too late!

Tickets are available now, so make sure to secure yours early! The workshops and talks are expected to cover cutting-edge topics in React, JavaScript, and web development.

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Infobip Shift Conference 2024: Uniting the Global Tech Community in Zadar, Croatia

Panayiotis Georgiou — Thu, 12 Sep 2024 15:35:04 +0000

ZADAR, CROATIA, SEPTEMBER 15 – 17, 2024

Get ready for one of the most anticipated tech events of the year as Infobip Shift returns to Zadar, Croatia, from September 15 to 17, 2024. This year’s conference promises to bring together a vibrant mix of developers, software engineers, tech founders, disruptors, and coding enthusiasts from around the globe to connect, innovate, and explore the future of technology.

GET TICKETS

Why Attend Infobip Shift 2024?

Infobip Shift is not just a conference; it’s a celebration of the tech community. It’s where code meets creativity, ideas transform into innovations, and networks expand beyond borders.

Here’s why you should be part of this dynamic event:

Connect with the Global Tech Community: Meet like-minded professionals, engage in meaningful conversations, and build connections that could lead to your next big opportunity or collaboration.
Explore the Future of Code: Dive deep into the latest trends, tools, and technologies shaping the world of software development. From AI and machine learning to blockchain and cybersecurity, Infobip Shift covers it all.
Learn from the Best: Gain insights from top-tier speakers, including industry leaders, innovative startups, and tech visionaries who are setting the pace in the world of coding and development.
Hands-On Workshops and Demos: Participate in interactive sessions designed to enhance your skills and knowledge. Learn new coding techniques, explore the latest software, and get hands-on experience with cutting-edge technology.

Key Highlights

Inspiring Keynotes and Sessions: The conference will feature a packed agenda of keynote presentations, breakout sessions, and panel discussions that will challenge your thinking and inspire you to push the boundaries of what’s possible.
Networking Opportunities: Whether it’s during the coffee breaks, evening socials, or dedicated networking sessions, you’ll have plenty of chances to connect with fellow attendees, share your experiences, and discover new perspectives.
Expo and Start-Up Zone: Explore the expo floor to discover the latest tech innovations, tools, and services. Check out the start-up zone to meet the next generation of tech companies making waves in the industry.

Why Zadar?

Zadar, a picturesque city on Croatia’s stunning Adriatic coast, serves as the perfect backdrop for Infobip Shift. Known for its historical architecture, beautiful coastline, and vibrant cultural scene, Zadar offers a unique blend of ancient charm and modern vibrancy, making it an ideal location for a conference dedicated to innovation and the future.

Who Should Attend?

Infobip Shift is designed for everyone passionate about tech and development:

Developers and Software Engineers: Whether you’re a seasoned pro or just starting your coding journey, there’s something for everyone at Infobip Shift.
Tech Founders and Entrepreneurs: Discover the latest trends, meet potential investors, and learn how to scale your tech ventures.
Tech Enthusiasts and Innovators: If you love exploring new technologies and want to be at the forefront of the tech industry, this conference is a must-attend.

Don’t Miss Out!

Join us in Zadar for Infobip Shift 2024 as we come together to celebrate the power of code, share our knowledge, and shape the future of technology. Secure your spot today, and be part of a community that’s driven by innovation, curiosity, and a shared passion for technology.

For more information and to register, visit Infobip Shift. We look forward to seeing you in Zadar!

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React Conf 2024

Panayiotis Georgiou — Thu, 09 May 2024 14:45:48 +0000

React Conf 2024 is just one week away! We can’t wait for you to hear the talks from our speakers. We are really excited to connect with you. The community is the heart of React, shaping what it is today. We’re looking forward to celebrating React with you!

Agenda

The agenda is packed with insightful talks and engaging speakers from the React team and community. You can find the complete agenda on our website.

React Conf 2024 Agenda

Hear from the React team and your favorite community members

Each day kicks off with a keynote where you’ll hear about the future of React and some exciting announcements. Next, you’ll learn about React 19 from Lydia Hallie and Sam Selikoff and hear from the people who built React 19 like Josh Story, Ricky Hanlon, and Andrew Clark. Later on you’ll hear about the latest in server components from Dan Abramov, Kent C. Dodds, Evan Bacon, Amy Dutton, Aurora Walberg Scharff, and more. We’ll end each day with Q&As hosted by Michael Chan and Jamon Holmgren. And look out for some unforgettable surprise talks we’ll be announcing later!

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Exploring Node.js 20.6: Built-in Support for .env Files

Panayiotis Georgiou — Thu, 02 May 2024 08:53:43 +0000

Hey fellow developers! Today, let’s dive into one of the exciting new features introduced in Node.js version 20.6: the built-in support for .env files. This enhancement simplifies how we manage environment variables in Node.js applications, offering a cleaner and more streamlined approach.

What are `.env` Files?

First things first, let’s quickly recap what .env files are. These files are plain text files used to store configuration data, such as API keys, database URLs, or other environment-specific variables. Each line in a .env file typically follows a KEY=VALUE format, making it easy to read and update.

The Problem Before Node.js 20.6

Prior to version 20.6, handling .env files in Node.js required third-party libraries like dotenv. While these libraries served the purpose well, they added an extra dependency and setup step to our projects. It was common to see code like this at the top of many Node.js scripts:



require('dotenv').config(); // Load environment variables from .env file

This approach worked fine but felt somewhat cumbersome, especially for beginners or developers looking for a more integrated solution.

Node.js 20.6 to the Rescue!

With Node.js 20.6, managing .env files becomes a breeze. The Node.js core now includes native support for loading environment variables directly from a .env file, eliminating the need for third-party packages like dotenv.

Here’s how you can take advantage of this new feature:

Create a .env File : Start by creating a .env file in the root of your Node.js project. Populate it with your environment variables, for example:



PORT=3000
DB_URL=mongodb://localhost:27017/myapp
API_KEY=your_api_key_here

Access Environment Variables : Within your Node.js application, you can access these variables using process.env just like before, but without the need to explicitly load the .env file:



const port = process.env.PORT;
const dbUrl = process.env.DB_URL;
const apiKey = process.env.API_KEY;

How It Works

Node.js 20.6 automatically loads the .env file when your application starts. This behavior is similar to how dotenv worked, but now it’s seamlessly integrated into Node.js itself.

Benefits of Built-in Support

The inclusion of native .env file support in Node.js 20.6 brings several advantages:

Simplified Setup : No more installing and configuring dotenv.
Reduced Dependency : Your project has fewer external dependencies.
Improved Performance : Direct integration with Node.js core means better performance.

Try It Out!

If you haven’t already, upgrade to Node.js 20.6 (or later) to leverage this new feature. Simply create a .env file in your project directory and start using environment variables directly in your Node.js applications.



node myapp.js

That’s it! Node.js 20.6 makes managing environment variables smoother and more intuitive than ever before. Give it a try and let us know what you think.

Happy coding!

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React Paris 2024

Panayiotis Georgiou — Tue, 19 Mar 2024 09:10:40 +0000

React Paris 2024 is just around the corner! That’s right, React Paris 2024 is set to take place on 22nd March 2024, and it promises to be an unforgettable experience for developers, designers, and tech enthusiasts alike.

If you’re passionate about React and eager to stay ahead of the curve with the latest trends, innovations, and best practices in web development, then React Paris is the place to be. Organized by a team of dedicated professionals who are deeply ingrained in the React ecosystem, this event is designed to inspire, educate, and connect like-minded individuals from around the world.

So, what can you expect from React Paris 2024? Let’s dive in:

Inspiring Talks & Workshops : Dive into the React universe with talks from top-notch speakers, covering everything from the basics to the latest trends. Whether you’re a newbie or a seasoned pro, there’s something for everyone!

Meet & Mingle : Connect with fellow devs, share ideas, and make new friends. It’s all about building connections and having a blast together!

Sneak Peeks & Surprises : Get an exclusive peek into the future of React, plus some exciting surprises along the way. You won’t want to miss out!

Good Vibes Only : Expect a day filled with fun, laughter, and plenty of positive vibes. We’re all about creating an unforgettable experience for you!

Ready to join the React party? Grab your ticket now at React Paris and let’s make some memories together!

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Hacktoberfest 2023 🏆

Panayiotis Georgiou — Wed, 01 Nov 2023 10:39:36 +0000

For the fifth consecutive year I have just completed the #hacktoberfest2023 challenge with 7 Pull Requests (1 still pending) successfully merged. **

It is with great pleasure to be involved in Hacktoberfest and contribute on several people projects.

DONE #Hacktoberfest #OpenSource #hacktoberfest10

@hacktoberfest

Badge awarded on holopin as follows:

Who else have?

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Past Editions

2022 – Hacktoberfest

2021 – Hacktoberfest

2020 – Hacktoberfest

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Countdown to Shift Conference 2023

Panayiotis Georgiou — Sat, 09 Sep 2023 06:53:20 +0000

The anticipation is building as I prepare to immerse myself in a world of innovation, tech trends, and visionary insights at the Shift Conference 2023. Hosted by Infobip, this annual event is more than just a conference; it’s a gateway to the future of technology and communication. SO the Countdown to Shift Conference 2023 is ON.

What is the Shift Conference?

The Shift Conference is a globally renowned gathering that transcends traditional boundaries. It serves as a nexus where thought leaders, tech enthusiasts, and creative minds unite to explore the ever-evolving landscape of technology. Infobip has curated an exceptional platform that paves the way for groundbreaking discussions and revelations about the digital era we live in.

The Power of Connection

This year, the Shift Conference promises an even deeper exploration of the intricate relationship between technology, communication, and humanity. As I delve into the meticulously crafted sessions and workshops, I anticipate gaining insights into topics that resonate with our rapidly changing world.

Themes That Inspire

One of the highlights of the Shift Conference is its commitment to bringing cutting-edge themes to the forefront. From the impact of artificial intelligence and machine learning to the evolving dynamics of customer engagement and the role of emerging technologies in shaping the future, the conference agenda is a testament to the commitment to innovation.

Meet the Visionaries

A key draw for attendees is the roster of industry pioneers who will be taking the stage at Shift Conference 2023. These luminaries have their fingers on the pulse of innovation and will be sharing their wisdom and expertise. I can’t wait to be in the audience, soaking in the insights and ideas that will undoubtedly shape our future.

Unlocking Networking Potential

Beyond the scheduled sessions, I’m eagerly looking forward to the networking opportunities. Meeting like-minded individuals, forging new connections, and sharing ideas is a cornerstone of the Shift Conference experience. It’s a chance to be part of something bigger and contribute to the collective wisdom of the tech community.

The Shift Conference 2023 is not just an event; it’s a catalyst for change and a celebration of innovation. I’m eager to return from this experience armed with fresh insights, innovative ideas, and a renewed sense of purpose in my professional journey.

Stay tuned for my post-conference reflections, where I’ll share some of the most impactful takeaways and experiences from this year’s Shift Conference. If you’re attending too, let’s connect! Reach out to me on social media, and let’s make the most of this incredible opportunity to learn, grow, and shape the future together.

Shift Conference 2023, here I come!

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Previous Years

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How to Fix GitHub Error – WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

Panayiotis Georgiou — Mon, 26 Jun 2023 16:15:12 +0000

If you encounter the error message “WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!” when using Git or GitHub, it typically means that the SSH fingerprint for the remote host has changed since the last time you connected to it. This post will indicate you How to Fix GitHub Error – WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

Error in Terminal

***Normally, this is a very serious error, and you should pay attention to it.

Error VS code

Why this happened?

It turns out GitHub updated their RSA SSH host key a few days ago because it was briefly exposed in a public GitHub repo.

The Solution

I fixed the problem by removing the old SSH key with the following command:

ssh-keygen -R github.com

Then the next time I ran git push I added the new SSH key by answering yes to the following question:

Are you sure you want to continue connecting (yes/no)? yes

I’m running Windows 10 with PowerShell and git version 2.30.1.

For more information about why GitHub updated their SSH key see here.

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DEV Community: Panayiotis Georgiou

Completed Hacktoberfest 2025

Hacktoberfest 2024 - Completed 🏆

hacktoberfestchallenge

React Brussels 2024: Elevate Your React Skills

1. Cutting-Edge React Insights

2. Network with Industry Leaders

3. Engage in Hands-on Workshops

4. Discover the Broader React Ecosystem

5. Explore Brussels, the Heart of Europe

6. Support and Celebrate the Open-Source Community

7. The Perfect Place for Team Building

Conclusion

Hacktoberfest 2024: A Celebration of Open Source and Community

What is Hacktoberfest?

Who Can Participate?

How to Get Started

Tips for Success

Key Dates

Why Open Source Matters

Past Editions

React Alicante 2024: A Global Gathering for React Developers in Spain

Infobip Shift Conference 2024: Uniting the Global Tech Community in Zadar, Croatia

Why Attend Infobip Shift 2024?

Key Highlights

Why Zadar?

Who Should Attend?

Don’t Miss Out!

React Conf 2024

Hear from the React team and your favorite community members

Exploring Node.js 20.6: Built-in Support for .env Files

What are .env Files?

The Problem Before Node.js 20.6

Node.js 20.6 to the Rescue!

How It Works

Benefits of Built-in Support

Try It Out!

React Paris 2024

Hacktoberfest 2023 🏆

Countdown to Shift Conference 2023

What is the Shift Conference?

How to Fix GitHub Error – WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

***Normally, this is a very serious error, and you should pay attention to it.

Why this happened?

The Solution

What are `.env` Files?