I was trying to reproduce the issue:
- setting protocol level to debug
- I changed the GUI to expert mode (!)
- removed the hardware instance completely (I only had one)
- redid the wizard...
And bang! Issue gone. No http 301 anymore.
Removed the hyperion DB, started from scratch.
GUI in "beginner" mode, Wizard -> error 301 (http)
Removed the hyperion DB, started from scratch.
GUI in "expert" mode, Wizard -> no errors.
So, having the Hue working with Hyperion, I tried to configure the screen grabber.
Ubuntu 25.10 (incl. GNOME) does NOT support x11 anymore, only wayland. So I think, I am having a new issue here.