Published URL can't open ""

I have published an app on, but the URL does not open, and the error is as follows.

The app works perfectly in local.

# An error has occurred

The application failed to start.

exit status 1


Where does this error appear?

Can you look at the logs? Go to your admin page, select the app, you should have a "Logs" tab.

Then try opening your app in your browser and see what gets added to the logs.