Think of dpkg as the "engine" underneath the hood of your Linux distribution (like Ubuntu, Debian, Linux Mint, or Kali Linux). When you use user-friendly commands like apt or open your Software Center, those tools are essentially talking to dpkg in the background to actually install, remove, or configure software packages.
The error occurs when dpkg was running a transaction (e.g., configuring a package or running triggers) and was killed by:
Enter your password when prompted. Then wait. This command will attempt to finish configuring any packages that were left in an unfinished state. Think of dpkg as the "engine" underneath the
The entire process takes less than a minute.
--configure : Instructs the utility to configure any unpacked but unconfigured packages. Then wait
After that, run:
sudo chown -R root:root /var/lib/dpkg/ sudo chmod -R 755 /var/lib/dpkg/ --configure : Instructs the utility to configure any
sudo dpkg --configure -a