Pages not found anymore

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Suddenly the pages of a repository are not accessible anymore.
The job works just fine, ending with

Uploading artifacts...
public: found 161 matching files and directories
Uploading artifacts as "archive" to coordinator... ok id=707597406 responseStatus=201 Created token=nhsrECJq
Job succeeded

but the link provided in Settings/Pages leads ot a 404 error.
Also, if I browse the artifacts of the job, when I click in the index.html I get

error “insufficient_scope”
error_description “The request requires higher privileges than provided by the access token.”
scope “api read_api”

This happens with latest or with any artifacts of pass jobs.

I have changed nothing in the .gitlab-ci.yml that was working (also the job succeeds).

This is happening with a private project, with pages visibility set to “Only Project Members”.
As far as I have checked all my public projects are working fine.

Troubleshooting

I have tried:

  1. Removing pages and submitting the job again
  2. Setting visibility to Public
  3. Removing all cached data and cookies in my browser

Any hint of how to fix this?

Thanks