Heroku app R99 error after ps:scale web=1 command

Question

I am getting R99 error on deploying the application. This is the log of the error. 013-09-11T03:59:59.474112+00:00 heroku[web.1]: Starting process with command : java -jar target/dependency/jetty-runner.jar target/*.war 013-09-11T04:00:01.980799+00:00 heroku[web.1]: Process exited with status 0 013-09-11T04:00:09.677377+00:00 heroku[web.1]: Error R99 (Platform error) -> Fa led to launch the dyno within 10 seconds 013-09-11T04:00:09.677604+00:00 heroku[web.1]: Stopping process with SIGKILL 013-09-11T04:00:01.992776+00:00 heroku[web.1]: State changed from starting to c ashed

Please tell me if I have to provide anything elsa

Answer 1

I had to take port for web dyno from environment from procfile. Without which it showed the folowing error