Flask webapp runs locally when started with gunicorn, doesn't work on azure

Question

I have a Flask web app which is currently running on azure. I made another one with the exact same file structure, app initialisation, configurations and startup command, yet the second one doesn't run. The error I get in the logs is "no module named 'manage'".

I am really confused since to my knowledge this should be working. Would appreciate any help :)

Answer 1

Thanks for asking question! If I am understanding right you have deployed flask linux python web app and having 'No module named 'manage' error.

If you see an error like ModuleNotFoundError: No module named 'example', this means that Python could not find one or more of your modules when the application started. This most often occurs if you deploy your virtual environment with your code.

Please note that Virtual environments are not portable, so a virtual environment should not be deployed with your application code.
Instead, let Oryx create a virtual environment and install your packages on the web app by creating an app setting, SCM_DO_BUILD_DURING_DEPLOYMENT, and setting it to 1.

This will force Oryx to install your packages whenever you deploy to App Service.

For more information, please see this article on virtual environment portability.

Reference: https://learn.microsoft.com/en-us/azure/app-service/configure-language-python

Let us know if further query or issue remains.