Fatal error: Uncaught Error: Class 'WP_Customize_Control' not found in /home/wiktorek1221/public_html/klasaivwb/wp-content/themes/sydney/inc/customizer/controls/radio-buttons/class_sydney_radio_buttons.php:8 Stack trace: #0 {main} thrown in /home/wiktorek1221/public_html/klasaivwb/wp-content/themes/sydney/inc/customizer/controls/radio-buttons/class_sydney_radio_buttons.php on line 8