Error reporting help you to identify the error when you are having any issue running Joomla. This configuration variable is available in your Joomla settings and is responsible for controlling the display of errors. On a production Joomla installation this variable is set to "None" by default, this means errors are not displayed in your website, even if you have the errors report turned on in your PHP settings in your hosting account. On a Joomla first installation this variable is inherited from the PHP setting, usually is set as "default".
Change this setting from "None" or "default" to any of the listed options below in your "configuration.php" file in your Joomla installation when you are seeing a blank page or any error in your Joomla website to find the problem or for debugging purposes.
"E_ALL | E_STRICT" – All errors, warnings, notices, and strict standards will be displayed on the website;
"E_ALL" – All errors, warnings, notices will be displayed on the website;
"E_ALL & ~E_NOTICE" – All errors, warnings, but no notices will be displayed on the website;
"E_ALL & ~(E_NOTICE|E_WARNING)" – All Errors. No warnings or notices will be displayed on the website;
"0" – No error reporting at all.
Error reporting will help you to have more granular options of the level of errors showing in your Joomla website.
