Screen share disappeared

Hello, in my case the screen sharing option has disappeared.
I can no longer access it with other PCs using VNC Viewer "Timeout waiting for a response from the computer."
How can I fix the problem?

cu Oggy1

I'll look into this further at some stage. You might want to use https://meet.jit.si in browser that supports chrome extension. You can share screen easily. I've used it in one to one training and in online Linux User Group meetings.