Cannot install any app, ppa error. (18.04)
10101
How can PPAs be removed?
113146
Some Ubuntu 18.04 pre-installed apps don't launch
152823
PPAs will not install "sudo: add-apt-repository: command not found"
105208
How can I check if a PPA has packages for another Ubuntu version?
30754
Cannot update: "No available releases found"
728
Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?
65
What can I do if a repository/PPA does not have a Release file?
111161
Unable to install software packages using Home Brew
91611
Unable to use package manager due to "exclusive lock" error
36696
Unmet dependencies unable to fix
18097
How to install an application that requires gksu package on ubuntu 18.04?
85033
Why is Play Store showing "Can't install app...Error Code: 910"?
96145
Cannot Add PPA Behind Proxy Ubuntu 14.04
43579
I cannot install new packages: "Could not get lock /var/lib/dpkg/lock"
73068
cant install or remove anything on 18.04 cause of DPKG error
59119
apt-get, unmet dependencies, ... "but it is not going to be installed"
153810
"Untrusted packages could compromise your system's security" appears while trying to install anything