Reading Ray Paseur advices, I'm trying to set error_reporting to ALL for my PHP installation.
I'm using MAMP.
My PHP version is 5.6.2. so I've updated the php.ini located at: /Applications/MAMP/conf/php5.6.2 by uncommenting the line "error_reporting = E_ALL"
In addition, I've updated display_errors by setting it to “On”.
I have restarted the server but nothing appears in the browser.
I can see my error in php_error.log.