Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch - Heroku

Question

I am trying to deploy my server on heroku. I got this error:

Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
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Answer 1

It's possible that you are making request without wait the server finish run, so it break because cannot finish building before 90 seconds.

It's a guess that are happening here.

Answer 2

This problem occurs when Heroku can not find the port specified in Procfile.

A simple solution to this problem is doing a port setting dynamically by Procfile.

Add in Procfile ->

web: java -Dserver.port=$PORT $JAVA_OPTS -jar target/nome_do_meu_app.jar

Remember that the Maven packaging should be JAR.