Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method prettygallery::prettygallery_scripts() cannot be called statically in /home/respon42/public_html/bok_new_wp/wp-includes/class-wp-hook.php:303 Stack trace: #0 /home/respon42/public_html/bok_new_wp/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #1 /home/respon42/public_html/bok_new_wp/wp-includes/plugin.php(470): WP_Hook->do_action(Array) #2 /home/respon42/public_html/bok_new_wp/wp-includes/script-loader.php(2083): do_action('wp_enqueue_scri...') #3 /home/respon42/public_html/bok_new_wp/wp-includes/class-wp-hook.php(303): wp_enqueue_scripts('') #4 /home/respon42/public_html/bok_new_wp/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #5 /home/respon42/public_html/bok_new_wp/wp-includes/plugin.php(470): WP_Hook->do_action(Array) #6 /home/respon42/public_html/bok_new_wp/wp-includes/general-template.php(3015): do_action('wp_head') #7 /home/respon42/public_html/bok_new_wp/wp-content/themes/bok-eng/header.php(45): wp_head() #8 /home/respon42/public_html/bok_new_wp/wp-includes/template.php(770): require_once('/home/respon42/...') #9 /home/respon42/public_html/bok_new_wp/wp-includes/template.php(716): load_template('/home/respon42/...', true, Array) #10 /home/respon42/public_html/bok_new_wp/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #11 /home/respon42/public_html/bok_new_wp/wp-content/themes/bok-eng/template_locator.php(2): get_header() #12 /home/respon42/public_html/bok_new_wp/wp-includes/template-loader.php(106): include('/home/respon42/...') #13 /home/respon42/public_html/bok_new_wp/wp-blog-header.php(19): require_once('/home/respon42/...') #14 /home/respon42/public_html/bok_new_wp/index.php(17): require('/home/respon42/...') #15 {main} thrown in /home/respon42/public_html/bok_new_wp/wp-includes/class-wp-hook.php on line 303