ModuleNotFoundError in modified sample python project

youtube
- requirements.txt
- src/
    |  main.py
    |  transcribe.py

from transcribe import transcribe_video

def main():
    youtube_url = context.req.body

    if youtube_url:
        return context.res.json(transcribe_video(youtube_url))
    else:
        raise ValueError('youtubeUrl is missing or empty')

Traceback (most recent call last):
  File "/usr/local/server/src/server.py", line 165, in handler
    output = await asyncio.wait_for(execute(context), timeout=safeTimeout)
  File "/usr/local/lib/python3.9/asyncio/tasks.py", line 479, in wait_for
    return fut.result()
  File "/usr/local/server/src/server.py", line 150, in execute
    userModule = importlib.import_module("function." + userPath)
  File "/usr/local/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 850, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/usr/local/server/src/function/main.py", line 1, in <module>
    from transcribe import transcribe_video
ModuleNotFoundError: No module named 'transcribe'