Confused Why My App Deploy/Build Failed

My build seems to have worked, it installed my app and it says build complete.

Under Activity > Deployment > Logs > Build Logs there is a check next to service, and the logs say ✔ build complete in green.

Under Activity > Deployment > Logs > Deploy Logs there’s a red [!], and after I ran it it said it failed to deploy. But in these logs, I see the normal logs from my app starting up and even starting to work, but then it ends with no error or anything.

Why did it say it failed if my app seemed to be working normally and shows no error?

I did find it strange that it said the build was in progress after my app had already started, so maybe I configured something wrong, like it expects a build script that ends once it’s ready or something?

This is for a discord bot using node.js that will run continuously.