Error creating default "bridge" network: bridge device with non default name br0 must be created manually

无法启动docker时
先：

journalctl -xe

查看日志出现以下报错：

而Error creating default "bridge" network: bridge device with non default name br0 must be created manually这句话翻译过来为
创建默认“网桥”网络时出错：必须手动创建非默认名称为br0的网桥设备

此时创建br0网桥

brctl addbr br0

而后启动docker即可

systemctl start docker