Fatal error: Uncaught Error: Class "WC_Settings_API" not found in /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/wp-content/plugins/montonio-for-woocommerce/v2/includes/admin/class-wc-montonio-api-settings.php:6 Stack trace: #0 /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/wp-content/plugins/montonio-for-woocommerce/montonio.php(312): require_once() #1 /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/wp-includes/class-wp-hook.php(324): Montonio->init_api_settings('') #2 /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #3 /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #4 /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/wp-settings.php(704): do_action('init') #5 /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/wp-config.php(102): require_once('/data02/virt755...') #6 /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/wp-load.php(50): require_once('/data02/virt755...') #7 /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/wp-blog-header.php(13): require_once('/data02/virt755...') #8 /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/index.php(17): require('/data02/virt755...') #9 {main} thrown in /data02/virt75581/domeenid/www.mosel-avenue-studio.de/htdocs/wp-content/plugins/montonio-for-woocommerce/v2/includes/admin/class-wc-montonio-api-settings.php on line 6