Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method OUGC_Feedback::hook_global_intermediate() cannot be called statically in /data/sites/web/orangemoonsit/www/inc/class_plugins.php:136 Stack trace: #0 /data/sites/web/orangemoonsit/www/global.php(498): pluginSystem->run_hooks(Array) #1 /data/sites/web/orangemoonsit/www/index.php(22): require_once('/data/sites/web...') #2 {main} thrown in /data/sites/web/orangemoonsit/www/inc/class_plugins.php on line 136