Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "SetCanonicalContent" not found or invalid function name in /home/bitrix/www/bitrix/modules/main/tools.php:5260 Stack trace: #0 /home/bitrix/www/bitrix/modules/main/classes/general/main.php(3388): ExecuteModuleEventEx() #1 [internal function]: CAllMain->EndBufferContent() #2 /home/bitrix/www/bitrix/modules/main/classes/general/main.php(3643): ob_end_flush() #3 [internal function]: CAllMain::{closure}() #4 {main} thrown in /home/bitrix/www/bitrix/modules/main/tools.php on line 5260