Receiving error when try to run Docker image

[mtbowers]

Receiving this error when I try to run the docker image:

Traceback (most recent call last):
  File "app.py", line 21, in <module>
    from apis import *
  File "/app/apis/__init__.py", line 1, in <module>
    from flask_restful import Api
ModuleNotFoundError: No module named 'flask_restful'