ERR unknown command 'pubsub'

[CaoQuocTuan]

events.js:183
throw er; // Unhandled 'error' event
^
ReplyError: ERR unknown command 'pubsub'
at parseError (...\MV_Online-master\node_modules\redis-parser\lib\parser.js:193:12)
at parseType (...\MV_Online-master\node_modules\redis-parser\lib\parser.js:303:14)
events.js:183
throw er; // Unhandled 'error' event
^

Error [ERR_IPC_CHANNEL_CLOSED]: channel closed
at ChildProcess.target.send (internal/child_process.js:588:16)
at Worker.send (internal/cluster/worker.js:54:28)
at Master.balance (D:\Project\Project Web\MV_Online-master\node_modules\sticky-session\lib\sticky\master.js:84:44)
at emitOne (events.js:116:13)
at Master.emit (events.js:211:7)
at TCP.onconnection (net.js:1565:8)

Please help me!
@Nelderson