"App Crashed" in Heroku log

Question

I am having a problem with my Node application that is on the Heroku server. When I make many requests for the same route /oapi/login the application stops running, the error that the log returns is this:

2020-01-18T14:41:27.184911+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=OPTIONS path="/oapi/login" host=expenses-server-api.herokuapp.com request_id=171e102c-befe-45d2-9415-6899a84adf54 fwd="201.182.211.10" dyno= connect= service= status=503 bytes= protocol=https

And then I can no longer access other application routes.

Remarks:

• I’m using Mongoose for the bank connection
• The archive package json. is configured correctly
• The archive Procfile is correct too
• All environment variables are set

Answer 1

In the code I was just sending reply without making any Exception treats, so when any connection to the bank was made, I put the block try / catch.

Old Code:

await Model.find((err, resp) => {
   if (err) {
      return res.status(400).json(err);
   } else {
      return res.status(200).json(resp);
   }
});

Current Code:

try {
   await Model.find((err, resp) => {
      if (err) {
         return res.status(400).json(err);
      } else {
         return res.status(200).json(resp);
      }
   });
} catch (err) {
   return res.status(400).json(err);
}

Of course that was my case, yours may be different, but now I can make as many wrong requests as the server does not go to (Crashed App).