[CDSW] Package import error during model deployment

There is an error during cdsw model deployment where the package of code is not imported.

- CDSW version
1.9.2

- Folder Configuration
/home/cdsw
l- ex_package_one
l    l- ex_package_two
l    l-ex_pkg_code.py
l
l- predict
l    l- predict.py

predict.py is the code used in the model deployment.

- Package import code within predict.py
....
from ex_package_one.ex_package_two import ex_pkg_code
...

- Error log
ModuleNotFoundError: No module named 'ex_package_one'

- Attempt to resolve the error
I printed it out as os.getcwd() from predict.py and it came out as /cdsw/home.

sys.path.append(os.path.dirname(os.path.abspath(os.path.dirname("__file__"))))
The path was added using the above code, but the same error occurred.

No package errors will occur if the code is transferred to /home/cdsw/predict.py.

Is there any other way to solve this problem?
Thank you for any help.