Fatal error: Uncaught Error: Call to undefined function is_mobile() in /home/xs808674/yobi.clinic/public_html/wp-content/themes/yk01/index.php:69
Stack trace:
#0 /home/xs808674/yobi.clinic/public_html/wp-includes/template-loader.php(106): include()
#1 /home/xs808674/yobi.clinic/public_html/wp-blog-header.php(19): require_once('/home/xs808674/...')
#2 /home/xs808674/yobi.clinic/public_html/index.php(17): require('/home/xs808674/...')
#3 {main}
thrown in /home/xs808674/yobi.clinic/public_html/wp-content/themes/yk01/index.php on line 69