I am trying to run a route on Node and the error appears below:

Question

I’m trying to create a website with routes, using Mysql and Node.js But when I will run.. appears the following msg:

follows the error msg:

Emitted 'error' event on Server instance at:
    at emitErrorNT (net.js:1345:8)
    at processTicksAndRejections (internal/process/task_queues.js:80:21) {
  code: 'EADDRINUSE',
  errno: -4091,
  syscall: 'listen',
  address: '::',
  port: 8081
}