"Invalid Add-on Repository!"

[NapalmCandy]

Hi
I al trying to install this repository to HA, I follow the instructions and add https://github.com/maisken/hassio-addons as repository, but get the message "Invalid Add-on Repository!"

What it is the correct URL?

[djsomi]

Try to add several time, or restart HASS, i had the same issue, then finally accepted it.