Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method VIDBG::vidbg_add_scripts() cannot be called statically in /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/class-wp-hook.php:303 Stack trace: #0 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #1 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/plugin.php(470): WP_Hook->do_action(Array) #2 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/script-loader.php(2083): do_action('wp_enqueue_scri...') #3 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/class-wp-hook.php(303): wp_enqueue_scripts('') #4 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #5 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/plugin.php(470): WP_Hook->do_action(Array) #6 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/general-template.php(3015): do_action('wp_head') #7 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-content/themes/sydney/header.php(17): wp_head() #8 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/template.php(770): require_once('/homepages/2/d3...') #9 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/template.php(716): load_template('/homepages/2/d3...', true, Array) #10 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #11 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-content/themes/sydney/page-templates/page_fullwidth.php(8): get_header() #12 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/template-loader.php(106): include('/homepages/2/d3...') #13 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-blog-header.php(19): require_once('/homepages/2/d3...') #14 /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/index.php(17): require('/homepages/2/d3...') #15 {main} thrown in /homepages/2/d317699322/htdocs/clickandbuilds/HongWuKungFuundTaiChiSchule/wp-includes/class-wp-hook.php on line 303