I get the following output (and error) when I try to create an AAB file:
B4A Version: 11.50
Parsing code. (0.00s)
Java Version: 11
Building folders structure. (0.03s)
Compiling code. (0.01s)
Compiling layouts code. (0.01s)
Organizing libraries. (0.00s)
(Android Support Library)
Compiling resources (0.95s)
Linking resources (0.29s)
Compiling generated Java code. (1.29s)
Finding libraries that need to be dexed. (0.00s)
Dex code (1.32s)
Dex merge (1.42s)
Copying libraries resources (0.07s)
Building app bundle Error
C:\Android\Sdk\tools\bin\bundletool.jar