[20312] Failed to execute script 'main' due to unhandled exception!

[MewnianSquire]

Disclaimer, I do not know python, I never used it so this post maybe considered stupid but I need any help I can get so...

Traceback (most recent call last):
  File "main.py", line 15, in <module>
    from detector import Detector
  File "PyInstaller\loader\pyimod03_importers.py", line 495, in exec_module
  File "detector.py", line 12, in <module>
    import numpy as np
ModuleNotFoundError: No module named 'numpy'
[20312] Failed to execute script 'main' due to unhandled exception!

I've installed numpy on my pc using pip but this is still the error I get