Looks like a plugin to me. Try working your way though your plugins, disabling each one until the error disappears. Keep the malfunctioning plugin disabled or uninstall it
As the others has said, I would say its a plugin. And by the looks of the other console outputs, maybe a camera plugin? Try temporarily disabling your plugins.
Top of your screen, select Plugins, then Manage Plugins to the left, and turn them off in the Plugin Management menu.
And I know Roblox Studio can spit errors at me with my internet sometimes.