There is an old site on Symfony2. I edited one of the twig-files. The content of the page remains the same.
I tried: Cleared app/cache folder. Restarted apache server. Reloaded browser with Ctrl+F5.
How to "rebuild" the site after editing twig files?
The problem was that I haven't noticed that the site are hosted from a virtual machine. Thus, files in the standard location were ignored.