Frontail does not show logs anymore

Setup, Configuration and Use Runtime
1

Frontail does not show my logs anymore. I’m on 4.1.1 openhabian.
The files are ok, the frontail status is ok and restart does not change the situation.

Any hint appreciated.

IMG_1139
IMG_11392122×479 58 KB

UPDATE: it does not work with the hostname but with the ip Adress.
Any other openhab sites like :8080 work well with the hostname.