Module not found Error when deployed on Heroku

Question

I am trying to deploy my app on Github to Heroku but getting error:

ERROR in ./src/Index.tsx Module not found: Error: Can\'t resolve \'./ConfigureStore\

Answer 1

Is the missing module is a dev-dependancy? In such case you won't see any problem locally, whilst Heroku doesn't install dev-dependancies, and you get "Module not found" error. To fix this, simply uninstall the dev-dependancy and reinstall the module with --save flag