Build Failed for version 8.1

Not sure why but I get this message. after installing 8.1 on iMac:

Doe son happen when trying to build older apps just the new one. Not sure if I added the Target Android Platform: Android 10 (API 29) correctly?

BUILD FAILED in 12s

16 actionable tasks: 15 executed, 1 up-to-date

ls: /var/folders/45/m3md2p6x05vb2130zy45wktw0000gn/T/App Builder/build/SAB.012/a/build/outputs/apk/release: No such file or directory

BUILD FAILED:

The signed apk was not built successfully. This could be due to an internet connection problem. On the first build, the compiler needs to connect to the internet to download some library files.