New nexcloudpi installation (newbie installer)

Hey folks !

i am currently using a raspberry pi 4 with a pihole.
i wanted to use the same raspberry pi with the nextcloudpi.
Installation was pretty easy.
Now i`m tryin to access the new nextcloudpi Installation via Browser @ https://nextcloudpi.local:4443/

But it will not work. even with https://192.168.178.2:4443/ same problem.
What am i missing here ?

any tipp is appreciated.

Regards,
Christian

Maybe without the S og httpS. Only http://โ€ฆ
I think the secure part will be configured later.