Module import error only when debugging

[chrissyast]

Environment data

• debugpy version: Unknown. import debugpy; print(debugpy.__version__) results in 'no module named debugpy'. When debugging through VS Code, shows (\.vscode\extensions\ms-python.python-2021.1.502429796\pythonFiles\lib\python\debugpy\launcher')
• OS and version: Win 10
• Python version (& distribution if applicable, e.g. Anaconda): Python 3.6.7
• Using VS Code or Visual Studio: VS Code

My structure

resource.py

class MyAPI():
#some code

main.py

from resource import LettersAPI

launch.json

        {
            "name": "Python: Foo",
            "type": "python",
            "request": "launch",
            "module": "flask",
            "env": {
                "FLASK_APP": "path/to/my/app/main.py",
                "FLASK_ENV": "development",
                "FLASK_DEBUG": "0",
                "PYTHONPATH": "${workspaceRoot}"
            },
            "args": ["run", "--port", "5002"],
            "console": "integratedTerminal"
        },

Steps to reproduce:

1. Run C:/Python/Python36-7/python.exe "path/to/my/app/main.py" from terminal
2. Observe working fine
3. Run Python: Foo debug config

Actual behavior

ModuleNotFoundError: No module named 'resource'

Expected behavior

Debug session starts fine

What I've tried

Adding the python path to env
Adding the file path to "python.autoComplete.extraPaths" (here)

[fabioz]

It seems you have an issue in the PYTHONPATH configuration...

Can you provide the information below?

1. What is your project structure (i.e.: where's your main file, where's your ${workspaceRoot} and where's the resources package.

2. Run the code below and provide the output you have (in the case where it works as well as the case where it doesn't work).

import sys
print('\n'.join(sorted(sys.path)))

import resource
print(resource)

[fabioz]

Closing as additional information wasn't provided.