Closed HatcherRobotics closed 3 years ago
I use ubuntu18.04 and http://mirrors.tuna.tsinghua.edu.cn/ubuntu bionic-security. I have used the order"sudo apt-get update"but has no effect. The problem is my ubuntu version,or my mirror needs to be changed?
I use ubuntu18.04 and http://mirrors.tuna.tsinghua.edu.cn/ubuntu bionic-security. I have used the order"sudo apt-get update"but has no effect. The problem is my ubuntu version,or my mirror needs to be changed?