Getting an Application Error on Heroku for a MERN Full Stack App

2020-04-24T07:43:20.673559+00:00 app[web.1]: npm ERR! Exit status 1
2020-04-24T07:43:20.673742+00:00 app[web.1]: npm ERR! 
2020-04-24T07:43:20.673865+00:00 app[web.1]: npm ERR! Failed at the mern-auth@1.0.0 start script.
2020-04-24T07:43:20.673893+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2020-04-24T07:43:20.681243+00:00 app[web.1]: 
2020-04-24T07:43:20.681531+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2020-04-24T07:43:20.681734+00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2020-04-24T07_43_20_674Z-debug.log
2020-04-24T07:43:20.751212+00:00 heroku[web.1]: State changed from starting to crashed
2020-04-24T07:43:22.118308+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=aqueous-brushlands-95740.herokuapp.com request_id=075b1444-0e29-4455-b5da-8ea54e077c5a fwd="101.0.32.111" dyno= connect= service= status=503 bytes= protocol=https
2020-04-24T07:43:23.384515+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=aqueous-brushlands-95740.herokuapp.com request_id=4fe42b30-8247-40f1-8b3b-9bba8e00724a fwd="101.0.32.111" dyno= connect= service= status=503 bytes= protocol=https

These are my logs.