I've installed the Meta Box Builder, but I cannot get the advanced tab to show for each field created, only for the whole field group. I actually don't even see any change from Meta Box to Meta Box Builder so I'm wondering if it's just not being installed properly for some reason. I have uninstalled and reinstalled multiple times.
Sorry for this issue. Zeeshan just left our support team, so I'll continue support you on this. I think the error in the console is not the cause of the bug since it's only the map file. Can you please take a screenshot of the Meta Box Builder screen? And if possible, please send me a temporary admin account via contact form, so I can do some debug on your site.