App Inventor was Unable to compile this project

[SRIKAR_B.S.S]

Hi Everyone
I am Srikar
I want to make a final test for my appathon app
then I was building my .apk and then suddenly it said 'App Inventor was Unable to compile this project'

And it also took 5 min. to connect to companion.
Total 8 screens and 19 assets
Can anyone help me with this As Soon As Possible
Regards,
Srikar

[Patryk_F]

Look through the blocks in all screens and see if you have any yellow and red errors in the lower left corner.

[SRIKAR_B.S.S]

This actually works
Thank You so much @Patryk_F