OH3 how to run Habpanel on raspberryPi (OS)


so far i had oh2 in operation, controlled via habpanel on a raspberrypi with raspberrry pi os.
but with the habpanel from oh3 the browser (chromium) only shows a white screen. The website title (openhab) is loaded. I call up the page with IP: 8080

must / need chromium plugins (chromium is the latest version) to load the oh3 start page?

thanks a lot!