check if x-frame-options is array

api/functions/organizr-functions.php

@@ -499,7 +499,11 @@ trait OrganizrFunctions
 	
 	public function checkFrame($array, $url)
 	{
+		
 		if (array_key_exists("x-frame-options", $array)) {
+			if (gettype($array['x-frame-options']) == 'array') {
+				$array['x-frame-options'] = $array['x-frame-options'][0];
+			}
 			$array['x-frame-options'] = strtolower($array['x-frame-options']);
 			if ($array['x-frame-options'] == "deny") {
 				return false;