Fatal error: Uncaught Error: Call to undefined function is_customize_preview() in /var/www/andovercg/staging/wp-content/themes/astra/template-parts/scroll-to-top.php:10 Stack trace: #0 {main} thrown in /var/www/andovercg/staging/wp-content/themes/astra/template-parts/scroll-to-top.php on line 10