Fix timeout getting value from database

calparrot/proxy.py

@@ -139,7 +139,7 @@ class ProxyHandler(RequestHandler):
                     timeout=15
                 )
                 resp = ProxyResponse.from_stored(status, reason, headers, body)
-            except TimeoutError:
+            except asyncio.TimeoutError:
                 # Still pending - the process fetching it may have crashed.
                 resp = await self._get_upstream(req_path)
                 self._record_response(req_path, resp)