Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'wp_enable_block_templates' not found or invalid function name in /mnt/hosts/h1167709/www/www.stricktick.de/wp-includes/class-wp-hook.php on line 303

Fatal error: Uncaught Error: Class 'WP_Theme_JSON_Resolver' not found in /mnt/hosts/h1167709/www/www.stricktick.de/wp-includes/script-loader.php:1530
Stack trace:
#0 /mnt/hosts/h1167709/www/www.stricktick.de/wp-includes/class-wp-hook.php(303): wp_default_styles(Object(WP_Styles))
#1 /mnt/hosts/h1167709/www/www.stricktick.de/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters('', Array)
#2 /mnt/hosts/h1167709/www/www.stricktick.de/wp-includes/plugin.php(518): WP_Hook->do_action(Array)
#3 /mnt/hosts/h1167709/www/www.stricktick.de/wp-includes/class.wp-styles.php(135): do_action_ref_array('wp_default_styl...', Array)
#4 /mnt/hosts/h1167709/www/www.stricktick.de/wp-includes/functions.wp-styles.php(24): WP_Styles->__construct()
#5 /mnt/hosts/h1167709/www/www.stricktick.de/wp-includes/functions.wp-styles.php(132): wp_styles()
#6 /mnt/hosts/h1167709/www/www.stricktick.de/wp-content/plugins/2-click-socialmedia-buttons/libs/class-twoclick-frontend.php(154): wp_register_style('twoclick-social...', 'http://www.stri...', '', '1 in /mnt/hosts/h1167709/www/www.stricktick.de/wp-includes/script-loader.php on line 1530