Heroku is a cloud platform as a service (PaaS) supporting several programming languages. Anything related to managing such applications should be tagged with this. This including but not limited to things like dyno management, a setting up ssl and managing addons.

Heroku supports the following languages: Ruby, Java, Python, Node.js, PHP, Clojure, Scala and Play https://devcenter.heroku.com/categories/language-support

However, for technical and programming language related issues you are likely better off asking questions on stackoverflow.com or serverfault.com