Administrator cannot log in

After the jar service is started, it will normally jump to the administrator registration page, but after the registration is completed, logging in with this account will always return to the current page. The background log shows this:

Hi @jetty

So you are setting up a new instance?
And after you have completed the setup, then you are being logged out and you cannot login?

Sounds like there's something wrong with your setup or you are using a browser or reverse-proxy, which is messing with the requests.

Try using the latest release:
Following the guide: