Post list fixes

exam/classes/Models/Post/Post.php

@@ -126,7 +126,7 @@ class Post implements JsonSerializable
       $stmt->bindValue(":ID", $this->id);
       try {
         if (!$stmt->execute()) throw ApiError::failedUpdate(["content"]);
-      } catch (Exception) {
+      } catch (Exception $e) {
         throw ApiError::failedUpdate(["content"]);
       }
     }