"Items cannot be installed or removed until the package catalogue is repaired."
73560
Item cannot be installed or removed until the package catalogue is repaired
134563
How do I remove a broken software source?
45210
How does item repair work?
149428
How do I refresh the package list?
728
Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?
91611
Unable to use package manager due to "exclusive lock" error
133137
"Problem with MergeList /var/lib/apt/lists/repository.spotify.com" while updating the list
30515
Cannot remove file: "Structure needs cleaning"
41519
What can I do if a package is not available on the newest version of Ubuntu (18.04) but is available on older versions?
39944
What does "(Install)" mean in a package?
53039
Resolve the error "An illegal choice has been detected..."
24090
How can you completely remove a package?
1632
How do I fix a "Failed to download package files" error?
25131
Error on uninstalling package via apex
18052
How to remove/install a package that is not fully installed?
7460
E: Unable to correct problems, you have held broken packages
3523
What does "Package  has no installation candidate" mean?