$ sudo snap install vlc
error: cannot install "vlc": Get https://search.apps.ubuntu.com/api/v1/snaps/details/vlc?confinement=strict:
dial tcp: lookup search.apps.ubuntu.com on [::1]:53:
read udp [::1]:44642->[::1]:53:
read: connection refused
请帮忙！我有一个良好的工作互联网连接。我不知道是什么问题。