https://localhost:8066/
instead of just http://localhost/
. This is just an example though and your URL may differ.cat /etc/network/interfaces
and show us the output. In case you didn`t forgot the "s" of "https:" and not the ":8006", then you probably kept the default IP "192.168.100.2" when installing PVE, which is wrong, when that is not the subnet your router is using.