Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "_wp_theme_json_webfonts_handler" not found or invalid function name in /customers/4/7/7/poldis-bamberg.org/httpd.www/wp-includes/class-wp-hook.php:288
Stack trace:
#0 /customers/4/7/7/poldis-bamberg.org/httpd.www/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters(NULL, Array)
#1 /customers/4/7/7/poldis-bamberg.org/httpd.www/wp-includes/plugin.php(476): WP_Hook->do_action(Array)
#2 /customers/4/7/7/poldis-bamberg.org/httpd.www/wp-settings.php(461): do_action('plugins_loaded')
#3 /customers/4/7/7/poldis-bamberg.org/httpd.www/wp-config.php(96): require_once('/customers/4/7/...')
#4 /customers/4/7/7/poldis-bamberg.org/httpd.www/wp-load.php(50): require_once('/customers/4/7/...')
#5 /customers/4/7/7/poldis-bamberg.org/httpd.www/wp-blog-header.php(13): require_once('/customers/4/7/...')
#6 /customers/4/7/7/poldis-bamberg.org/httpd.www/index.php(17): require('/customers/4/7/...')
#7 {main}
  thrown in /customers/4/7/7/poldis-bamberg.org/httpd.www/wp-includes/class-wp-hook.php on line 288