Setup is done / getting python error

[postgresql13]

All the setup is done and stored the aws credentials also. when I do select * from test, it is throwing me an error.

postgres=# select * from test;
ERROR: Error in python: AttributeError
DETAIL: 'NoneType' object has no attribute 'get_table'
postgres=#

I am not sure what it mean. Please help me out .
Thanks .