[debian]cockpit 报错Cannot refresh cache whilst offline

报错

Cannot refresh cache whilst offline

解决

可能是网络渲染器（render）有问题，需要修改/etc/netplan/00-installer-config.yaml文件，
在network组最后添加
renderer: NetworkManager
如

# This is the network config written by 'subiquity'
network:
  ethernets:
    enp3s0:
      dhcp4: true
  version: 2
  renderer: NetworkManager

然后应用
sudo netplan apply