Ajax 500 error when use custom validation email

I use custom validation email addresses on my site.

function payrollms_email_validation_filter($result, $tag){
    if ( isset($_POST['_wpcf7']) && $_POST['_wpcf7'] == 14999){
    $field_name = 'email-payroll-ms';
    $tag = new WPCF7_Shortcode($tag);
    if ($field_name == $tag->name) {
        $the_value = isset($_POST[$field_name]) ? trim($_POST[$field_name]) : "";
        if (!payroll_business_email($the_value)) {
            $result->invalidate($tag, "Please enter a valid business email");
        }
    }}
    return $result;
}
add_filter('wpcf7_validate_email', 'payrollms_email_validation_filter', 10, 2);
add_filter('wpcf7_validate_email*', 'payrollms_email_validation_filter', 10, 2);

and with this code I got 500 error

wp-admin/admin-ajax.php?action=cf7mls_validation 500 (Internal Server Error)

• This topic was modified 3 years, 6 months ago by strannaja911.