[Error: ENXIO: no such device or address, open '/root/.pm2/rpc.sock'] {
  errno: -6,
  code: 'ENXIO',
  syscall: 'open',
  path: '/root/.pm2/rpc.sock'
}
[Error: ENXIO: no such device or address, open '/root/.pm2/pub.sock'] {
  errno: -6,
  code: 'ENXIO',
  syscall: 'open',
  path: '/root/.pm2/pub.sock'
}