Error "gpg: keyserver receive failed: No name"

I stumbled upon this today and found the fix at Maven Central Repository Documentation. The SKS Keyserver Network is being deprecated and probably gone by now. Just use another GPG key server like:

• keyserver.ubuntu.com
• keys.openpgp.org
• pgp.mit.edu

So for example

gpg --keyserver keyserver.ubuntu.com --recv-key 908F435E

Try these command one by one. It works for me.

curl -sSL https://rvm.io/mpapis.asc | gpg2 --import
curl -sSL https://rvm.io/pkuczynski.asc | gpg2 --import

As an alternative to the options above, from the RVM security documentation,

If you encounter problem with the key server above, try a different one. Some alternatives are presented below:

• hkp://ipv4.pool.sks-keyservers.net
• hkp://pgp.mit.edu
• hkp://keyserver.pgp.com

The second one worked for me, hkp://pgp.mit.edu

Replace $key with the corresponding $key you want to add.

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys $key

This works on Ubuntu 20.04 (Focal Fossa).

Please use these commands one by one:

curl -sSL https://rvm.io/mpapis.asc | gpg --import -

curl -sSL https://rvm.io/pkuczynski.asc | gpg --import -

Or you can refer to the rvm.io.

keys.gnupg.net is just an alias to pool.sks-keyservers.net. You can point directly to this second address and it will work.