It is common practice to deploy enterprise level apps to the cloud, since the hosting industry evolved dramatically in the few recent years. But for small apps, one would only need a standard physical server or in most cases: a VPS.
There are actually two main articles dealing with the subject of deploying a Symfony/Php App on Heroku, but since I found some differences, I have decided to write an article specific to the 4th version of Symfony.
One of the trickiest subjects in Symfony development is customizing or theming form fields. In this article I will summarize how I managed to do so after some research.
So, I was working on the security layer of an app, as usual, then I started testing the code, when this weird errors message popped out of nowhere : Authentication request could not be processed due to a system problem.