No internet, but local network connection

Problem

Internet is connected and working on all other devices. Local network can be accessed, but there is no connection to the internet possible

Error cause

ProtonVPN

There where open connections to protonVPN killswitch

Solution

Remove everything, except your network devices, till it starts working again

nmcli device
sudo nmcli connection delete pvpn-ipv6leak-protection
sudo nmcli connection delete pvpn-killswitc