For those looking to change over to the p7zip version, the original instructions are unfortunately out of date on here. They have been updated on the project github however. Hope this helps anyone else running into errors with the old tag not working :)
Just wanted to say thanks as I was having the same error response and capitalisation was this issue for me too!
Looks like when it searches for the network it's always in lowercase, even if it is a capital in the network list.