I've encountered this problem, here is a workaround: apt install omniauth-oauth2=1.7.1
- Bug#1024627: gitlab: Fails to install Kurt Roeckx
- Bug#1024627: Acknowledgement (gitlab: Fails to instal... Kurt Roeckx
- Bug#1024627: Acknowledgement (gitlab: Fails to in... Pirate Praveen
- Bug#1024627: gitlab: Fails to install Fabien (Debian)
