Please help solve the problem:
When I open my site I see Warning message – pls see below.
Warning: array_key_exists() expects parameter 2 to be array, null given in /home/ulmussto/public_html/wp-content/themes/corporate-club/includes/customizer/sanitize.php on line 28
But in line 28 there is no error? all is correct.
How to solve the problem and where is the problem?