[CODEOWNERS] Code owners need to be valid GitHub handles

Development
1

I try to develop a new platform. According to the developers docs I have to run

python3 -m script.hassfest

to add myself as the codeowner. This results in the following error
[CODEOWNERS] Code owners need to be valid GitHub handles

What can be wrong?

2

Nevermind, I forgot to add “@” in the manifest file in front of my name.