Fatal error: Uncaught Error: Call to undefined function wp_is_serving_rest_request() in /www/htdocs/w00669ac/PROJEKTE/RooM/wp-includes/rest-api.php:3413 Stack trace: #0 /www/htdocs/w00669ac/PROJEKTE/RooM/wp-includes/script-loader.php(2590): wp_is_rest_endpoint() #1 /www/htdocs/w00669ac/PROJEKTE/RooM/wp-includes/blocks/index.php(29): wp_should_load_separate_core_block_assets() #2 /www/htdocs/w00669ac/PROJEKTE/RooM/wp-includes/class-wp-hook.php(324): register_core_block_style_handles('') #3 /www/htdocs/w00669ac/PROJEKTE/RooM/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #4 /www/htdocs/w00669ac/PROJEKTE/RooM/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #5 /www/htdocs/w00669ac/PROJEKTE/RooM/wp-settings.php(695): do_action('init') #6 /www/htdocs/w00669ac/PROJEKTE/RooM/wp-config.php(115): require_once('/www/htdocs/w00...') #7 /www/htdocs/w00669ac/PROJEKTE/RooM/wp-load.php(50): require_once('/www/htdocs/w00...') #8 /www/htdocs/w00669ac/PROJEKTE/RooM/wp-blog-header.php(13): require_once('/www/h in /www/htdocs/w00669ac/PROJEKTE/RooM/wp-includes/rest-api.php on line 3413