(.py) got converted to exe but while executing fails to find ib\ext\anywrapper.py ... (IBPY)

Question

I am using interactive broker api - ibpy. I have generated an executable using pyinstaller as well as cx_freeze.

The executable gets created in both the cases but while executing it gives the same error that it could not find the file ib\ext\AnyWrapper.py.

File "lib\site-packages\ib\opt\message.py", line 153, in <module>
File "lib\site-packages\ib\opt\message.py", line 31, in __ init__

FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\admin\\AppData\\Local\\Temp\\_MEI27882\\ib\\ext\\AnyWrapper.py'

In the above example, the temp folder gets deleted, but while using cx_freeze it could see that the file ib\ext\AnyWrapper.pyc existed.

Could this be some error in ib\opt\message.py itself while looking for AnyWrapper? Should it be looking for AnyWrapper and not AnyWrapper.py?

Is it a bug with IBPY or is it something else?