diff --git a/www/handlers.py b/www/handlers.py
index af2ea07..1f38560 100644
--- a/www/handlers.py
+++ b/www/handlers.py
@@ -12,7 +12,7 @@
 from aiohttp import web
 
 from coroweb import get, post
-from apis import Page, APIValueError, APIResourceNotFoundError
+from apis import Page, APIValueError, APIResourceNotFoundError, APIError
 
 from models import User, Comment, Blog, next_id
 from config import configs