Problem by running App on Phone

#flutter #dart #android

Hi,
i was trying to build my very first Flutter app in Android Studio and to install it on my personal android phone, and i got this Error. Do someone know how to fix it?

Error: ADB exited with exit code 1
Performing Streamed Install

adb: failed to install 
C:\Users\-...-\Projects\FirstTestApp\build\app\outputs\flutter-apk\app-debug.apk:
Error launching application on <phone Name>.

At this point I already activated "USB-Debugging" and "Allow ADB-Debugging in load only mode" on my phone.

I also got sometimes a warning by lounching the App on a Virtual Device:

Warning: This version only understands SDK XML versions up to 3 but an SDK XML file of version 4 was encountered. This can happen if you use versions of Android Studio and the command-line tools that were released at different times.

Thanks for reading this and thanks in advance for helping.
Have a nice Day.
steezphilipp

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