fix

@@ -52,7 +52,7 @@ exports.serverError = () => {
         forceNoCache(res);
 
         const uid = req.user ? req.user.uid : 0;
-        const udid = _.get(req, 'cookies.udid', 0);
+        const udid = _.get(req, 'cookies.udid', 'yoho');
 
         if (req.isApmReport) {
             // 上报服务端错误