Fatal error: Uncaught Error: Call to undefined function rest_get_endpoint_args_for_schema() in /home/itis3d5/public_html/wp-includes/rest-api/endpoints/class-wp-rest-controller.php:628 Stack trace: #0 /home/itis3d5/public_html/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php(81): WP_REST_Controller->get_endpoint_args_for_item_schema('POST') #1 /home/itis3d5/public_html/wp-includes/rest-api.php(227): WP_REST_Posts_Controller->register_routes() #2 /home/itis3d5/public_html/wp-includes/class-wp-hook.php(287): create_initial_rest_routes(Object(WP_REST_Server)) #3 /home/itis3d5/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #4 /home/itis3d5/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #5 /home/itis3d5/public_html/wp-includes/rest-api.php(506): do_action('rest_api_init', Object(WP_REST_Server)) #6 /home/itis3d5/public_html/wp-includes/rest-api.php(332): rest_get_server() #7 /home/itis3d5/public_html/wp-includes/class-wp-hook.php(287): rest_api_loaded(Object(WP)) #8 /home/itis3d5/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters('', Array) #9 /home/itis3d5/public_html/wp-includes/plugin.php(544): WP_Hook->do_action(Array) #10 /home/itis3d5/public_html/wp-includes/class-wp.php(388): do_action_ref_array('parse_request', Array) #11 /home/itis3d5/public_html/wp-includes/class-wp.php(745): WP->parse_request('') #12 /home/itis3d5/public_html/wp-includes/functions.php(1285): WP->main('') #13 /home/itis3d5/public_html/wp-blog-header.php(16): wp() #14 /home/itis3d5/public_html/index.php(17): require('/home/itis3d5/p...') #15 {main} thrown in /home/itis3d5/public_html/wp-includes/rest-api/endpoints/class-wp-rest-controller.php on line 628