I just successfully deployed my app but I have a 502 error and in the logs when there is no default process a command is required
What should I do?
This means you need to upload a Procfile inside your repository to instruct the engine what to do when your app starts.
More info here: https://devcenter.qoddi.com/fixing-error-failed-to-launch-determine-start-command/
Let us know if that helped!