Docker runs on a NAS system; TLS error

[BigBen2003]

Hello,
the Docker system runs on a NAS system.

Since ports 80 and 443 have already been used by other services, they were redirected to 4080 and 40443 for FrankenPHP.

On a NAS system, access is only possible via an internal IP address, e.g. http://192.168.1.32:4080 or https://192.168.1.32:40443

When accessing via the http protocol, the https protocol is forwarded.

When accessing via the IP address 192.168.1.32, a tls error is displayed.

Can anyone give me a tip on how to prevent forwarding to the https protocol?