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Atul Bhatt
Atul Bhatt

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Hot Reload Fails, DOM adds an additional iframe

Hey React Developers🙋‍♂️, this your gateway to solving this problem if you're still facing this. I've tested the solution in multiple React projects on various different devices with variety of OS and browsers. Why? Because everyone in my team was facing this issue but were not frustrated enough to solve it which I was.

I've gone through multiple github discussions and stackoverflow posts to finally reach this solution and then test it out.

Let's see the symptoms you're facing. Are they mentioned below:

  • Application becomes non-interactive, iframe is added to DOM.
  • Hot reload continues to work, but the page becomes unresponsive. Can't click or do anything unless you do a manual refresh.
  • process is not defined
Uncaught ReferenceError: process is not defined
at Object.4043 (<anonymous>:2:13168)
at r (<anonymous>:2:306599)
at Object.8048 (<anonymous>:2:9496)
at r (<anonymous>:2:306599)
at Object.8641 (<anonymous>:2:1379)
at r (<anonymous>:2:306599)
at <anonymous>:2:315627
at <anonymous>:2:324225
at <anonymous>:2:324229
at HTMLIFrameElement.e.onload (index.js:1)
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You might have started facing this problem either after updating your CRA or starting a new project using create-react-app which lead to the probable lead cause of it to be react-error-overlay.

You can check the issue reported on github here


npm i -D react-error-overlay@6.0.9

If this doesn't helps, check this out.

If this solution solves your problem, do like this post or comment down so that others can also get the benefit by reaching to it as early as possible. Till then safe debugging👍

Top comments (4)

pedromiotti profile image
Pedro Miotti Arribamar

Wow, that was exactly what i was looking for, saved me so much headache. Thank you for taking the time to write this post !!!

atulbhattsystem32 profile image
Atul Bhatt

Good to know🙂

karthikmurakonda profile image
karthik mv

helped our team!

atulbhattsystem32 profile image
Atul Bhatt

My purpose of sharing this got fulfilled then.🙂