Repository XXX does not have a Realease file

问题描述：

E: The repository ‘http://ppa.launchpad.net/noobslab/deepin-sc/ubuntu bionic Release’ does not have a Release file.

解决方案：

cd /etc/apt/sources.list.d
ls
sudo rm noobslab-ubuntu-deepin-sc-bionic.list
sudo rm noobslab-ubuntu-deepin-sc-bionic.list.save