Signing failed -- "No secret key" even though I have it

[Michael Stolovitzsky]

On 17-09-24, azarus wrote:
> Hello GPG users,
> 
> I have a problem regarding signing data. Whenever I try clear-signing,
> this appears:
> 
[snip]

> This is what gpg -K lists:
> 
> /home/azarus/.gnupg/pubring.kbx
> -------------------------------
> sec   rsa4096 2016-12-20 [SC]
>       <my-key-id>
> uid           [ultimate] <my-user-name> <my-email>
> uid           [ultimate] <my-real-name> <my-other-email>
> ssb   rsa4096 2016-12-20 [E]
> ssb#  rsa4096 2017-06-23 [SE]
> 
> Can somebody explain what I'm doing wrong? This was working a couple of

Your signing key has been replaced by a stub, which is what # after the key indicates, so 
gpg is unable to reach it, it's just aware of its existence.