Compilation Error, Can't find class file for screen

I'm new to App Inventor. Can anyone help me resolve this? I have given commands to close the current screen when both a button is clicked and when the screen is backpressed. But this error wasn't showing for screen2.

Rename your component back to something else

e.g. btnBack

bild

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Hello, i had the same error but when i renamed my back to something else it didn't work
.

is it the same error? can you share your aia file?

Please show your log
Taifun

oh nevermind it worked but thanks for trying to help :slight_smile: