Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "wp_widgets_init" not found or invalid function name in /homepages/19/d507316797/htdocs/domains/2013.fuerdiestanz.at/wp-includes/class-wp-hook.php:286 Stack trace: #0 /homepages/19/d507316797/htdocs/domains/2013.fuerdiestanz.at/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #1 /homepages/19/d507316797/htdocs/domains/2013.fuerdiestanz.at/wp-includes/plugin.php(465): WP_Hook->do_action(Array) #2 /homepages/19/d507316797/htdocs/domains/2013.fuerdiestanz.at/wp-settings.php(527): do_action('init') #3 /homepages/19/d507316797/htdocs/domains/2013.fuerdiestanz.at/wp-config.php(88): require_once('/homepages/19/d...') #4 /homepages/19/d507316797/htdocs/domains/2013.fuerdiestanz.at/wp-load.php(37): require_once('/homepages/19/d...') #5 /homepages/19/d507316797/htdocs/domains/2013.fuerdiestanz.at/wp-blog-header.php(13): require_once('/homepages/19/d...') #6 /homepages/19/d507316797/htdocs/domains/2013.fuerdiestanz.at/index.php(17): require('/homepages/19/d...') #7 {main} thrown in /homepages/19/d507316797/htdocs/domains/2013.fuerdiestanz.at/wp-includes/class-wp-hook.php on line 286