Drone can not activate my repository

Hi all.
I have a GoGS with private repositories. I have created a ‘drone’ user which has a read access to one of these repositories. Then I run drone server and agent using Docker compose utility. I pass the login and password for drone user on startup login page of drone service and see the repository. When I try to move the slider on the right side of repository title. I see the message “Failed to activate your repository”. I just don’t understand what should I do to fix this error.

which has a read access to one of these repositories

Drone requires admin access to the repository in order to activate, because it needs to create a webhook. Read access is insufficient.

Thank you very much!!!

Successfully activated your repository