Diagnostics page not reachable

Hello,

everything is working fine in the admin section except the diagnostics page which most times cannot be found. I checked the log and found those entries:

[2022-11-12 10:58:03.917][_][WARN] Request guard `AdminToken` is forwarding.
stdout
11:58:03
[2022-11-12 10:58:03.917][_][WARN] Response was `None`.
stdout
11:58:03
[2022-11-12 10:58:03.917][_][WARN] Responding with registered (not_found) 404 catcher.
stdout
11:58:03
[2022-11-12 10:58:03.917][response][INFO] (web_files) GET /<p..> [10] => 404 Not Found
stdout
11:58:03
[2022-11-12 10:58:03.987][_][WARN] Response was `None`.
stdout
11:58:03
[2022-11-12 10:58:03.987][_][WARN] Responding with registered (not_found) 404 catcher.

Does anyone know what this means?

Thank you in advance!

You first need to login into the admin interface.
Go to /admin first and login.

I am logged in to the admin interface. Every link there is working except Diagnostics. Sometimes the link works, but most times I get the 404 page.

What do the logs say.

Could be browser extensions which blocks or clears cookies or other headers.

Or, if you are using some kind of load balanced setup with two Vaultwardens running, that will not work.

Do the logs contain more info? If so I cannot find it.

I have a single NGINX, no load balancing and a Safari browser with one extension: Bitwarden.

It is strange that this happens several times and suddenly the link works without touching the web server or logging out of the admin area. Looks like the same issue: admin/diagnostics page returns 404 in latest version (1.26.0) · Issue #2880 · dani-garcia/vaultwarden · GitHub

The login token is only active for 20min.
After that you need to login again.

With logs i mean more logs from Vaultwarden, or the browser developers console.