I have activate it in wp-config.php:
@ini_set( ‘display_errors’, ‘On’ );
@ini_set(‘log_errors’,’On’);
@ini_set(‘error_reporting’,’E_ALL ‘);
define( ‘WP_DEBUG’, true );
// Enable Debug logging to the /wp-content/debug.log file
define( ‘WP_DEBUG_LOG’, true );
// Disable display of errors and warnings
define( ‘WP_DEBUG_DISPLAY’, true );
// Use dev versions of core JS and CSS files (only needed if you are modifying these core files)
define( ‘SCRIPT_DEBUG’, true );
But I still get no other error message and also no debug logfile is created