Access to the requested URL was blocked

While trying to access the URL:
/wp-login.php?redirect_to=https%3A%2F%2Fwww.arterris.fr%2Fwp-admin%2Fterm.php%3Ftaxonomy%3Dpost_tag%26tag_ID%3D274&reauth=1
The content is blocked for the following condition:
auth
Additional information:
access denied
This incident was logged with the following log identifier:
ZgbFRkgqjKdxNTvsx-5rwQAAAF4
Your cache administrator is:
infrastructures@arterris.fr