ERROR: unable to initialize GPG signer: unable to execute gpg

[j75]

Trying to publish a snapshot (aptly publish snapshot -gpg-key=... snapshot) generates the error in the title.

Detailed Description

I think the error comes from the fact that my keyring contains several keys; if I save only a key in a keyring and use it as the default keyring then it works.

Context

Debian 12.6 ; aptly version is 1.5.0+ds1-1+b4