Unable to connect to web panel

Hi all,

I just install nextcloud on my pi 3.
For installation i have used the image NextCloudPi. I have also update to 12.0.4.
It works fine. i can log on.
Then i want to configure NC using the web gui. (https://github.com/nextcloud/nextcloudpi/wiki/How-to-configure-NextCloudPi).
But i can acces to the page https://192.168.0.40:4443/ but when i want to log on with default login/pass, the page loop and ask me again and again the login and pass.
I have acces to the TUI, but i wish to do it with the web interface.

Can someone help me ?

Regards.

after a complete re-installation it works …