I ran the process using B4A SDK MAnager and B4A-Bridge (USB), the result was the same.
The version of B4A I am using is: 9.50.
As it was a prerequisite, I setup google api key.
I followed the tutorial is all I can say. (The result is attacked)
If the setup is not completed correctly, it is precisely my question.
Attached is the codes, versions and paths, of course google api Key is masked.