No keyserver available

Hi,
May be a very simple fix but I am new to this. I followed the installation instructions on docs.gitea.io. However, when I try to verify the GPG signature using

gpg --keyserver pgp.mit.edu --recv 7C9E68152594688862D62AF62D9AE806EC1592E2

I get the error message as
“gpg: keyserver receive failed: No keyserver available”

Can anyone please help with this?