minor php74 fix

@@ -133,8 +133,10 @@ abstract class ImmoScoutAPI extends GuzzleClient
         $token_secret = '';
         $token_secret = '';
         if ($authorized) {
         if ($authorized) {
             $tokenArray = static::restoreAccessToken();
             $tokenArray = static::restoreAccessToken();
-            $token = $tokenArray[0];
-            $token_secret = $tokenArray[1];
+            if($tokenArray && is_array($tokenArray)){
+                $token = $tokenArray[0];
+                $token_secret = $tokenArray[1];
+            }
         }
         }
 
 
         $stack = HandlerStack::create();
         $stack = HandlerStack::create();