I get "HTTP ERROR 500". Strangely this only happens when using heroku.
2020-02-25T12:28:11.467195+00:00 app[web.1]: [25-Feb-2020 12:28:11 UTC] PHP Warning: require(vendor/autoload.php): failed to open stream: No such file or directory in /app/index.php on line 5
2020-02-25T12:28:11.467504+00:00 app[web.1]: [25-Feb-2020 12:28:11 UTC] PHP Fatal error: require(): Failed opening required 'vendor/autoload.php' (include_path='.:') in /app/index.php on line 5
I get "HTTP ERROR 500". Strangely this only happens when using heroku.