Node.js 当接收到新订户时，rs/pushd崩溃

我正在尝试用作推送通知服务器

每当我尝试添加新订阅服务器时，服务器都会因以下堆栈跟踪而崩溃：

/home/ec2-user/push_server/pushd/node_modules/redis/index.js:602
                throw err;
                      ^
TypeError: Cannot set property 'id' of null
  at /home/ec2-user/push_server/pushd/lib/api.coffee:20:21
  at /home/ec2-user/push_server/pushd/lib/subscriber.coffee:133:21
  at try_callback (/home/ec2-user/push_server/pushd/node_modules/redis/index.js:592:9)
  at RedisClient.return_reply (/home/ec2-user/push_server/pushd/node_modules/redis/index.js:685:13)
  at HiredisReplyParser.<anonymous> (/home/ec2-user/push_server/pushd/node_modules/redis/index.js:321:14)
  at HiredisReplyParser.emit (events.js:95:17)
  at HiredisReplyParser.execute (/home/ec2-user/push_server/pushd/node_modules/redis/lib/parser/hiredis.js:43:18)
  at RedisClient.on_data (/home/ec2-user/push_server/pushd/node_modules/redis/index.js:547:27)
  at Socket.<anonymous> (/home/ec2-user/push_server/pushd/node_modules/redis/index.js:102:14)
  at Socket.emit (events.js:95:17)
  at Socket.<anonymous> (_stream_readable.js:765:14)
  at Socket.emit (events.js:92:17)
  at emitReadable_ (_stream_readable.js:427:10)
  at emitReadable (_stream_readable.js:423:5)
  at readableAddChunk (_stream_readable.js:166:9)
  at Socket.Readable.push (_stream_readable.js:128:10)
  at TCP.onread (net.js:529:21)

崩溃发生在订阅服务器添加到数据库之前

服务器是AWS上的RHEL微实例

版本

Redis服务器2.8.19

Node.js 0.10.36

CoffeeScript 1.9.0

任何帮助都将不胜感激

/lib/event.coffee
-        throw new Error("Missing redis connection") if not redis?
+        throw new Error("Missing redis connection") if not @redis?
/lib/subscriber.coffee
-                if info?.updated? # subscriber exists
+                if @info?.updated? # subscriber exists
                     # transform numeric value to number type
-                    for own key, value of info
+                    for own key, value of @info

/lib/event.coffee
-        throw new Error("Missing redis connection") if not redis?
+        throw new Error("Missing redis connection") if not @redis?
/lib/subscriber.coffee
-                if info?.updated? # subscriber exists
+                if @info?.updated? # subscriber exists
                     # transform numeric value to number type
-                    for own key, value of info
+                    for own key, value of @info