OS Error not a valid path to a data directory

[KaranModi0052]

OSError: [E050] Can't find model 'en'. It doesn't seem to be a shortcut link, a Python package or a valid path to a data directory

[vjuss]

I get the same error when deploying with Heroku. Works fine locally.

[Helena-wjh]

I get this error when running app.py