invalid character ‘‘ looking for beginning of object key string

Failed to start Docker Application Container Engine.

Sep 12 22:07:12 localhost.localdomain systemd1: docker.service: Scheduled restart job, restart counter is at 1.

Sep 12 22:07:12 localhost.localdomain systemd1: Stopped Docker Application Container Engine.

Sep 12 22:07:12 localhost.localdomain systemd1: Starting Docker Application Container Engine...

Sep 12 22:07:12 localhost.localdomain dockerd129253: unable to configure the Docker daemon with file /etc/docker/daemon.json: invalid character 'Â' looking for beginning of object key string

使用以下命令查看问题

journalctl -u docker.service

遇到这个问题，去掉daemon.json中的所有空格和制表符（以及其他非法字符）即可运行成功