Have the same issue. deleted and installed "datatransport". Still the same error
B4A Version: 10.70
Parsing code. (0.06s)
Java Version: 11
Building folders structure. (0.02s)
Compiling code. (0.10s)
Compiling layouts code. (0.01s)
Organizing libraries. (0.00s)
(AndroidX SDK)
Compiling resources (0.05s)
Linking resources (0.37s)
Compiling generated Java code. (0.01s)
Convert byte code - optimized dex. Error
Uncaught translation error: com.android.dx.cf.code.SimException: invalid opcode ba (invokedynamic requires --min-sdk-version >= 26)
1 error; aborting