at=error code=H10 desc="App crashed" method=GET path="/" host=dry-atoll-35740.herokuapp.com request_id=84286100-c388-4aa4-8a02-0a5c690ddf7e fwd="103.248.121.102" code example

Example: at=error code=h10 desc="app crashed" method=get path="/" host

Found solution for me here: Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)

In my case my app crashed because I was hard setting the PORT, instead of using the port that heroku dinamicaly sets, which can be accessed with process.env.PORT

app.listen(process.env.PORT || 3000, function(){
  console.log("Express server listening on port %d in %s mode", this.address().port, app.settings.env);
});