.

app/Http/Controllers/Video/Prayer.php

@@ -42,7 +42,7 @@ class Prayer {
       }
     }
 
-    $res->ytcomment = $this->backupYTComment($slugger, $res->ytcomment);
+    if ($res->ytcomment) $res->ytcomment = $this->backupYTComment($slugger, $res->ytcomment);
     $res->nicocomment = array();
     $res->bccomment = array();
     $res->lbcomment = array();