How to repair a PPA to not get "The repository is not signed."

Question

I created a PPA for some packages I've written. Then I added its keys in my machine:

$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 03BBACDA765F39D9A14EEDE4425F3F9343B40373
  ...
gpg: Número total processado: 1
gpg:               importados: 1

Then I tried to add the PPA repo, and got this:

$ sudo add-apt-repository ppa:brandizzi/ppa
   ...                                                                             
Err:4 http://ppa.launchpad.net/brandizzi/ppa/ubuntu bionic InRelease                                                                         
  403  Forbidden [IP: ...]
   ...
E: The repository 'http://ppa.launchpad.net/brandizzi/ppa/ubuntu bionic InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

I know I can force APT to use an unsigned repository, or add [trusted=yes] in my local source.list files but I'd like to see the commands above working without any of these approaches (which seem heavy-handed and less secure than possible.)

What should I change in my PPA to avoid this error?

Answer 1

After about 30 minutes from package upload I was able to add the PPA and install package from it.

So it was temporary issue. I think it was caused by GPG key generation and distribution for reusing by APT.