Fixed update posts error

App/Controllers/Posts.php

@@ -329,6 +329,7 @@ class Posts
         foreach ($args as $key => $val) {
             if (strpos($val, "##date##") !== false) {
                 $date = new \DateTime();
+                $now = $date->format("Y-m-d");
                 $args[$key] = $now;
             }
         }