Fatal error: Uncaught TypeError: array_column(): Argument #1 ($array) must be of type array, bool given in /data/sites/web/bb4mfnemyrdbxio/www/wp-content/themes/xing/functions/register-extensions.php:291 Stack trace: #0 /data/sites/web/bb4mfnemyrdbxio/www/wp-content/themes/xing/functions/register-extensions.php(291): array_column(false, 'custom_class_se...') #1 /data/sites/web/bb4mfnemyrdbxio/www/wp-content/themes/xing/header.php(75): checkSectionClass('fc-form', 7999) #2 /data/sites/web/bb4mfnemyrdbxio/www/wp-includes/template.php(810): require_once('/data/sites/web...') #3 /data/sites/web/bb4mfnemyrdbxio/www/wp-includes/template.php(745): load_template('/data/sites/web...', true, Array) #4 /data/sites/web/bb4mfnemyrdbxio/www/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #5 /data/sites/web/bb4mfnemyrdbxio/www/wp-content/themes/xing/page_page-builder.php(48): get_header() #6 /data/sites/web/bb4mfnemyrdbxio/www/wp-includes/template-loader.php(106): include('/data/sites/web...') #7 /data/sites/web/bb4mfnemyrdbxio/www/wp-blog-header.php(19): require_once('/data/sites/web...') #8 /data/sites/web/bb4mfnemyrdbxio/www/index.php(17): require('/data/sites/web...') #9 {main} thrown in /data/sites/web/bb4mfnemyrdbxio/www/wp-content/themes/xing/functions/register-extensions.php on line 291