Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "check_the_current_page" not found or invalid function name in /www/htdocs/w012a3ce/wordpresstest-michael/wp-includes/class-wp-hook.php:341 Stack trace: #0 /www/htdocs/w012a3ce/wordpresstest-michael/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters('', Array) #1 /www/htdocs/w012a3ce/wordpresstest-michael/wp-includes/plugin.php(570): WP_Hook->do_action(Array) #2 /www/htdocs/w012a3ce/wordpresstest-michael/wp-includes/class-wp.php(838): do_action_ref_array('wp', Array) #3 /www/htdocs/w012a3ce/wordpresstest-michael/wp-includes/functions.php(1343): WP->main('') #4 /www/htdocs/w012a3ce/wordpresstest-michael/wp-blog-header.php(16): wp() #5 /www/htdocs/w012a3ce/wordpresstest-michael/index.php(17): require('/www/htdocs/w01...') #6 {main} thrown in /www/htdocs/w012a3ce/wordpresstest-michael/wp-includes/class-wp-hook.php on line 341