Hello Expert,
Today I exported the aab file from the test server and uploaded it to the google play console to find out if it's working or not. I ran into the following error message.
Your Android App Bundle is signed with the wrong key. Ensure that your App Bundle is signed with the correct signing key and try again. Your App Bundle is expected to be signed with the certificate with fingerprint:
SHA1: B4:11:DA:AE:2C:7C:51:3A:EF:1D:28:87:C7:AF:9A:F4:3C:25:B5:4A
but the certificate used to sign the App Bundle you uploaded has fingerprint:
SHA1: CB:D2:2D:87:BE:B8:92:E5:71:8E:0B:BB:6F:6F:BA:75:94:A7:AE:CB
I guess I will just wait till I hear MIT App Inventor's announcement.