App deploys but doesn't open

1

I am able to deploy my app but the app isn’t able to open or be displayed. The only thing that is displayed multiple times in the logs is

error.code=2000 error.message=“problem connecting to app instance”

Not sure how to resolve this issue. Any tips or advice?

2

What type of app is it? Is it listening on an address and port that matches your fly.toml file?

3

I am not sure about which port it is listening to. Where do I find out which port it is listening to?

4

Usually it’s a default port on the framework/runtime you’re using. What kind of app is it? We can look at GitHub and make a guess.