Failed to install package from APT repository.
Failed to install package from APT repository.
Today I attempted to install Firefox via Software Manager, but encountered an unexpected error. Later, trying Apt also produced a similar issue. It seems the problem persists with other installations as well. Anyone have any suggestions on how to resolve this?
The software manager seems to be attempting a task. The fastest solution would be to restart the computer; Linux typically reboots very quickly.
The issue indicates another package manager is already running, preventing installation. The system reports process ID 5903 is blocking the operation. Try using "ps ax" and check for that process. If found, close it or restart the system as suggested.