I get this error what do i have to do? apksigner execution failed

[Marcos_N]

[Salman_Dev]

Try refreshing the page

[TIMAI2]

See here:

Problem signing APK, YAIL compiler > apksigner execution failed

Hello everybody. I’m new at APP Inventor and I’m really pleased with the ease of use. I just created an app that I needed and it is working!!! The problem is that when I build the APK at the end it gives the error i mentionned. The keystore I created earlier was used with another attempt, the same project actually but with a software called " Website to APK builder pro" that simply embeds a website in a APK. The keystore was accepted by the software so I figure that it is working. Now I import…

[ChrisWard]

It appears to be a signing issue - is this an update of an existing App?