Portainer and docker 18.09-5

I recently upgraded docker from 18.09-2 to 18.09-5 and I now can’t launch portainer anymore…
I have a timeout in the docker log that I cannot explain (is it a new firewall or security group constraint ?
is it related to containerd ?)

I read the note https://www.portainer.io/2019/05/docker-service-settings/#
but I’m not sure I configured well the docker service and the portainer launch

Is it really not necessary to put -H tcp:// in the execstart ?
is there a constraint with contained.sock vs docker.sock ?

Best regards