How to fix java.net.BindException with Proximo on Heroku?
问题 I have installed the Proximo add-on on Heroku and when prepending the command to my existing command, I get a BindException from Java. This is how my prepended command looks: web: bin/proximo sh target/bin/webapp and as soon as I remove the Proximo part ( bin/proximo ), the application starts up with no errors. This is the full stacktrace. What am I missing? Exception in thread "main" java.net.BindException: Cannot assign requested address at sun.nio.ch.Net.bind0(Native Method) at sun.nio.ch