What is causing a “Maximum function nesting level” error in Symfony 2.1 and Twig?

Question

I have a project on Symfony 2.1. After updating composer components (Gedemo, Symfony core, Doctrine, Twig, etc..) I have the following error:

Fatal error: Ma         


        

Answer 1

Find the xdebug.ini file:

$ locate xdebug.ini
/etc/php5/conf.d/20-xdebug.ini
/etc/php5/mods-available/xdebug.ini

In my case the file is /etc/php5/conf.d/20-xdebug.ini. Open it and add this line:

xdebug.max_nesting_level = 1000

Don't forget to restart the FPM server.