Redis Connection error

error.sh

→ nodemon app.js 
3 Jan 01:06:38 - [nodemon] v0.7.3
3 Jan 01:06:38 - [nodemon] watching: /Users/kaushik/dev/my_repos/mongomq
3 Jan 01:06:38 - [nodemon] starting `node app.js`
Express server listening on port 3000

/Users/kaushik/dev/my_repos/mongomq/node_modules/bull/node_modules/redis/index.js:165
                    throw callback_err;
                          ^
Error: Ready check failed: Redis connection gone from end event.
    at RedisClient.on_info_cmd (/Users/kaushik/dev/my_repos/mongomq/node_modules/bull/node_modules/redis/index.js:371:35)
    at Command.callback (/Users/kaushik/dev/my_repos/mongomq/node_modules/bull/node_modules/redis/index.js:419:14)
    at RedisClient.flush_and_error (/Users/kaushik/dev/my_repos/mongomq/node_modules/bull/node_modules/redis/index.js:162:29)
    at RedisClient.connection_gone (/Users/kaushik/dev/my_repos/mongomq/node_modules/bull/node_modules/redis/index.js:475:10)
    at Socket.<anonymous> (/Users/kaushik/dev/my_repos/mongomq/node_modules/bull/node_modules/redis/index.js:103:14)
    at Socket.EventEmitter.emit (events.js:117:20)
    at _stream_readable.js:920:16
    at process._tickCallback (node.js:415:13)
3 Jan 01:06:38 - [nodemon] app crashed - waiting for file changes before starting...
^C3 Jan 01:06:50 - [nodemon] exiting