```
$ sudo journalctl --no-pager -b -u docker.service
Jul 01 11:09:43 ravi-ThinkPad-X240 dockerd[28098]: unable to configure the Docker daemon with file /etc/docker/daemon.json: the following directives are specified both as a flag and in the configuration file: hosts: (from flag: [fd://], from file: [unix:///var/run/docker.sock])
Jul 01 11:09:43 ravi-ThinkPad-X240 systemd[1]: docker.service: Main process exited, code=exited, status=1/FAILURE
Jul 01 11:09:43 ravi-ThinkPad-X240 systemd[1]: Failed to start Docker Application Container Engine.
Jul 01 11:09:43 ravi-ThinkPad-X240 systemd[1]: docker.service: Unit entered failed state.
Jul 01 11:09:43 ravi-ThinkPad-X240 systemd[1]: docker.service: Failed with result 'exit-code'.
Jul 01 11:09:45 ravi-ThinkPad-X240 systemd[1]: docker.service: Service hold-off time over, scheduling restart.
Jul 01 11:09:45 ravi-ThinkPad-X240 systemd[1]: Stopped Docker Application Container Engine.
Jul 01 11:09:45 ravi-ThinkPad-X240 systemd[1]: docker.service: Start request repeated too quickly.
Jul 01 11:09:45 ravi-ThinkPad-X240 systemd[1]: Failed to start Docker Application Container Engine.
Jul 01 11:09:45 ravi-ThinkPad-X240 systemd[1]: docker.service: Unit entered failed state.
Jul 01 11:09:45 ravi-ThinkPad-X240 systemd[1]: docker.service: Failed with result 'start-limit-hit'.
Jul 01 11:09:45 ravi-ThinkPad-X240 systemd[1]: Stopped Docker Application Container Engine.
Jul 01 11:09:45 ravi-ThinkPad-X240 systemd[1]: docker.service: Start request repeated too quickly.
Jul 01 11:09:45 ravi-ThinkPad-X240 systemd[1]: Failed to start Docker Application Container Engine.
Jul 01 11:09:45 ravi-ThinkPad-X240 systemd[1]: docker.service: Failed with result 'start-limit-hit'.
Jul 01 11:09:57 ravi-ThinkPad-X240 systemd[1]: Stopped Docker Application Container Engine.
Jul 01 11:10:11 ravi-ThinkPad-X240 systemd[1]: docker.service: Start request repeated too quickly.
Jul 01 11:10:11 ravi-ThinkPad-X240 systemd[1]: Failed to start Docker Application Container Engine.
Jul 01 11:10:11 ravi-ThinkPad-X240 systemd[1]: docker.service: Failed with result 'start-limit-hit'.
```