ERROR (spawn error) when add ssh in entryPoints

Hello,
Everything work fine but when I add a SSH entryPoints and I restart the supervisor I have a error :

supervisorctl restart all
treafik_script: stopped
treafik_script: ERROR (spawn error)

Here is my config file :

[accesslog]
[api]
  insecure=true
  dashboard=true
  debug=false
[log]
  level="INFO"
[entryPoints]
  [entryPoints.web]
    address=":80"
  [entryPoints.mysql]
    address=":3306"
  [entryPoints.rabbitAdmin]
    address=":15672"
  [entryPoints.rabbit]
    address=":5672"
  [entryPoints.elasticAdmin]
    address=":9100"
  [entryPoints.elastic]
    address=":9200"
  [entryPoints.sftp]
    address=":22"
[providers.file]
  directory = "/root/services/"
  watch = true

Without these 2 lines everything is ok..only when I add these lines I have the error

  [entryPoints.sftp]
    address=":22"

I'm on Ubuntu 20.04

Many Thanks

hi grazulex

If traefik is on the same machine that your sshd, you can't configure traefik to listen on port 22 beacause the port is already opened for your sshd.