Fatal error: Uncaught Error: Class 'WP_Customize_Control' not found in E:\www\flone\jogging\wp-content\themes\neve\inc\customizer\controls\upsell_control.php:20 Stack trace: #0 {main} thrown in E:\www\flone\jogging\wp-content\themes\neve\inc\customizer\controls\upsell_control.php on line 20