krfb server fails to start after upgrade fom 24.04 to 24.10

[pseco]

Yesterday upgraded successfully from kubuntu 24.04 to 24.10. Then immediately krfb stopped working. I launch krfb and the dialog shows as usual with Enable Desktop Sharing enabled, but if I untick it, then tick it again, shows the message:

Error — Desktop Sharing
Failed to start the krfb server. Desktop sharing will not work. Try setting another port in the settings and restart krfb.

Changing the port number and changing from xcb to qt doesn’t make any difference.

Any help? Looks like it’s a bug since was working perfectly fine in 24.04.

Changing to qt does not work:

krfb
QSocketNotifier: Can only be used with threads started with QThread
Wayland: Detected invalid configuration: preferredFrameBufferPlugin is not pipewire:  "qt"
QObject::connect(FrameBuffer, RfbServerManager): invalid nullptr parameter​

[pseco]

Nobody has this issue?

[drdata]

Nobody has this issue?

Yes! Just installed a new kubuntu 24.10 machine and got this problem. Have you tried changing settings to use screendump xcb instead of qt?