ModuleNotFoundError: No module named '[x]']

[ikb42]

When the server has recently started and the Node app has recently started (specifically AWS Elastic Beanstalk new instance deployed)

When I call pd = await python('pandas');
I get an error like this: ModuleNotFoundError: No module named 'pandas']
This is despite there definitely being such a module, I am using the env variable PYTHON_BIN to set the path /usr/bin/python3.9

After some time, if I call this again it works.
So I have setup a recursive function that on app start, calls await python over and over again (with a pause) until it succeeds, it seems to take about 5 mins to work.
After that all works well.

[extremeheat]

Can you provide the stack trace for the error?

[ikb42]

:  at async loadPython (/var/app/current/src/server/utils/library/python/python.js:16:18)
: ... across the bridge ...
": > return _bootstrap._gcd_import(name[level:], package, level)"
:  at import_module (/usr/lib64/python3.9/importlib/__init__.py:127)
:  at _gcd_import (<frozen importlib._bootstrap>:1030)
:  at _find_and_load (<frozen importlib._bootstrap>:1007)
:  at _find_and_load_unlocked (<frozen importlib._bootstrap>:984)
: *** JS *** ModuleNotFoundError: No module named 'pandas']```