Fatal error: Uncaught Error: Call to a member function enqueue_frontend_resources() on null in /var/www/colinarcher.dk/public_html/wp-content/plugins/nextgen-gallery/src/Display/DisplayManager.php:150 Stack trace: #0 /var/www/colinarcher.dk/public_html/wp-content/plugins/nextgen-gallery/src/Display/DisplayManager.php(136): Imagely\NGG\Display\DisplayManager::enqueue_frontend_resources_for_displayed_gallery(Object(Imagely\NGG\DataTypes\DisplayedGallery), NULL) #1 /var/www/colinarcher.dk/public_html/wp-content/plugins/nextgen-gallery/src/Display/DisplayManager.php(153): Imagely\NGG\Display\DisplayManager::enqueue_frontend_resources_for_alternate_displayed_gallery(Object(Imagely\NGG\DataTypes\DisplayedGallery), Object(Imagely\NGG\DisplayTypes\Thumbnails)) #2 /var/www/colinarcher.dk/public_html/wp-content/plugins/nextgen-gallery/src/Display/DisplayManager.php(112): Imagely\NGG\Display\DisplayManager::enqueue_frontend_resources_for_displayed_gallery(Object(Imagely\NGG\DataTypes\DisplayedGallery), Object(Imagely\NGG\DisplayTypes\Thumbnails)) #3 /var/www/colinarcher.dk/public_html/wp-content/plugins/nextgen-gallery/src/Display/DisplayManager.php(53): Imagely\NGG\Display\DisplayManager::enqueue_frontend_resources_for_content('Dejlig tur p\xC3\xA5 ...') #4 /var/www/colinarcher.dk/public_html/wp-includes/class-wp-hook.php(324): Imagely\NGG\Display\DisplayManager->enqueue_frontend_resources('') #5 /var/www/colinarcher.dk/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #6 /var/www/colinarcher.dk/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #7 /var/www/colinarcher.dk/public_html/wp-includes/script-loader.php(2265): do_action('wp_enqueue_scri...') #8 /var/www/colinarcher.dk/public_html/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts('') #9 /var/www/colinarcher.dk/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #10 /var/www/colinarcher.dk/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #11 /var/www/colinarcher.dk/public_html/wp-includes/general-template.php(3050): do_action('wp_head') #12 /var/www/colinarcher.dk/public_html/wp-content/themes/twentysixteen/header.php(21): wp_head() #13 /var/www/colinarcher.dk/public_html/wp-includes/template.php(810): require_once('/var/www/colina...') #14 /var/www/colinarcher.dk/public_html/wp-includes/template.php(745): load_template('/var/www/colina...', true, Array) #15 /var/www/colinarcher.dk/public_html/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #16 /var/www/colinarcher.dk/public_html/wp-content/themes/twentysixteen/page.php(14): get_header() #17 /var/www/colinarcher.dk/public_html/wp-includes/template-loader.php(106): include('/var/www/colina...') #18 /var/www/colinarcher.dk/public_html/wp-blog-header.php(19): require_once('/var/www/colina...') #19 /var/www/colinarcher.dk/public_html/index.php(17): require('/var/www/colina...') #20 {main} thrown in /var/www/colinarcher.dk/public_html/wp-content/plugins/nextgen-gallery/src/Display/DisplayManager.php on line 150