Installation fails, Keyserver general error

Hello there!
Im a first time user of Linux and Lutris. I just installed Mint Cinnamon 20.2, which is basically Ubuntu.
Steam and Proton worked great out of the box, but now I want to try Lutris and GOG.

The first step of the installation fails for me though:

sudo add-apt-repository ppa:lutris-team/lutris

leads to

mint@mint:~$ sudo add-apt-repository ppa:lutris-team/lutris
You are about to add the following PPA:
Stable releases for the Lutris client
More info: Lutris stable : “lutris” team
Press Enter to continue or Ctrl+C to cancel

Executing: /tmp/apt-key-gpghome.OB2PTJbfkO/ --keyserver hkps:// --recv-keys 82D96E430A1F1C0F0502747E37B90EDD4E3EFAE4
gpg: keyserver receive failed: General error

Can anyone help me out?

I have exactly same problem with Mint 20.2. Could somebody help us?

Check over at the Mint forums - from memory there is a solution where you need to change the mint sources file. Search for keyserver receive failed

edit: yep - modify
Line 216 - “hkps://”
change to

This is stupid - not a Lutris issue, but a mint issue. Hopefully this gets sorted as I understand that this keyserver is approaching its eol from stuff I read on Ubuntu.