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

Also, I would like to add that adding the following to Procfile, allowed me to deploy my Spring boot app to heroku and resolved the exception you described above:

worker: java $JAVA_OPTS -jar target/myTargetJar-SNAPSHOT.jar

None of the solutions, listed on the web, helped me to solve the problem, this is why I decided to post the solution which helped me here. Maybe it is not on time, though :)