Fail to publish terraform module

Trying to publish an unreleased terraform module fails without proper browser indication, a 400 HTTP code and the following response

{“errors”:[“the module already exists on the registry and is owned by another user”]}{“errors”:[“PublishModulePost transaction failure: the module already exists on the registry and is owned by another user”]}

The module isn’t really released and it feels like some internal glitch. It’s not approachable neither from browser nor from terraform init command.
Changing the module name makes it work.
Any idea how to overcome this issue?