Hi, this seems like you haven't configured the APP_URL and APP_CLIENT_URL variables properly and the cookies are not passed properly then. Could you please share you config? Redact the sensitive information of course.
In my case:
APP_URL = APP_CLIENT_URL = https://drive.my-domain.com
...and it is behind reverse proxy (Ngnix Proxy Manager) that is pointing to my Unraid server and port 4554 which in my case is https://10.0.0.10:4554