If you have difficulty screen sharing while using Samba Live on a Mac computer, you might be able to resolve this issue by enabling sharing permissions from the System Preferences menu.
1. Click on the Apple icon in the upper left corner of your screen and select System Preferences.
2. Click on the Security and Privacy option.
3. Select the Privacy tab and search for the Screen Recording option to ensure Google Chrome is marked off to enable this permission.
Note: It's not uncommon to have to click the lock on the bottom left to be able to make any changes.
Note: An additional solution might be to ensure the screen sharing option inside the Sharing menu in System Preferences is also enabled.