Comment 3 for bug 1834997

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Spencer Seidel (jsseidel) wrote :

FYI -- found this after running into the same problem. This fixed it for me:

journalctl -u snap.docker.dockerd.service

I saw many of these:

docker.dockerd[1475]: failed to start daemon: pid file found, ensure docker is not running or delete /var/snap/docker/471/run/docker.pid

Stopped the docker snap (snap stop docker) Deleted the stale pid, restarted docker (snap start docker) and all was well.