game:GetService("InsertService"):GetFreeModels(42040828).Parent = Workspace
Whats the problem? :[
:GetFreeModels()is a member of InsertService, but that will return a table - it basically is a search request. The method you intend to use is
game:GetService("InsertService"):LoadAsset(42040828).Parent = Workspace
You also can only Insert stuff you have in your own Models & stuff created by ROBLOX, if I'm not mistaken.