SSO brocken with 0.16.6

[ChristianSchindler]

Please verify that this bug has NOT been raised before.

• [x] I checked and didn't find a similar issue

Describe the bug*

After updating to 0.16.6 SSO with GitLab did not work any longer:

I tested it with 0.16.5 and there it does work (also when rolling back to 0.16.5)

I do not even go to the SSO provider and I get a 403 at https://****/accounts/gitlab/login/?process=login&next=/

I did try to log in with my backup user, and in the old GUI, it does not work, but on the new one (/platform/login), it does work.

On the new GUI SSO dos also does not work

Steps to Reproduce

• Create a SSO provieder in 0.16.5
• update to 0.16.6
• login with SSO

Expected behaviour

I can log in

Deployment Method

• [x] Docker
• [ ] Package
• [ ] Bare metal
• [ ] Other - added info in Steps to Reproduce

Version Information

Update from 0.16.5 to 0.16.6

Please verify if you can reproduce this bug on the demo site.

• [ ] I can reproduce this bug on the demo site.

Relevant log output

No response

[ChristianSchindler]

on 0.16.5 also SSO does not work and goes to (/platform/null) so this my be 2 different problems