hydra.nixos.org return 403 error

[tobiasBora]

Describe the bug

Sorry if this is not the right place to report, but https://hydra.nixos.org/ reports now a 403 error on any place I can try to visit, including the links from status.nixos.org. Any ideas why?

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://hydra.nixos.org/'

Expected behavior
No error

Screenshots
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