When I run "docker run -it python:3" in a Ubuntu 18.04.1 LTS server, I got the following error. What does this mean and how do I fix this?
docker: Error response from daemon: OCI runtime create failed: container_linux.go:348: starting container process caused "process_linux.go:402: container init caused \"process_linux.go:385: running prestart hook 0 caused \\\"fork/exec /usr/bin/dockerd (deleted): no such file or directory\\\"\"": unknown.