The "Status: purge ok installed" on the three netcat packages is not right. Could you please try:
sudo cp /var/lib/dpkg/status /var/lib/dpkg/status.orig sudo sed -i 's/purge ok installed/install ok installed/' /var/lib/dpkg/status
and see if that helps? Hopefully that is the only error and you can proceed after that, but there could be more corruption after that.
The "Status: purge ok installed" on the three netcat packages is not right. Could you please try:
sudo cp /var/lib/ dpkg/status /var/lib/ dpkg/status. orig dpkg/status
sudo sed -i 's/purge ok installed/install ok installed/' /var/lib/
and see if that helps? Hopefully that is the only error and you can proceed after that, but there could be more corruption after that.