Exit of the trialmaster's challenge

Hi, I've just finished the 4th boss of the trial of chaos. I now have my 4th ascendance!!! But I can't exit the trialmaster's challenge room :-(
I haven't use the trial of the sekhemas for having my third ascendance.
I have tried to restart my computer, but it didn't change anything.
I play on linux and I use Heroic Game Launcher.
Please, how to return to the endgame?

Hi,

You have an option to create a portal to the Ziggurat Encampment.

I play on Ps5 and have it set to "UP" on my direction pad.

Cheers.