error: Aborted edit operation as you cannot encrypt resources.
Caused by: 
 1: At least one recipient you try to encrypt for is untrusted. Consider (locally) signing the key with `gpg --sign-key <recipient>` or ultimately trusting them.
Could not encrypt for recipient D6339718E9B58FCE3C66C78AAA5B7BF150F48332 (Tester (for testing only) <tester@example.com>) with error: Unusable public key (gpg error 53)