C ++ LuaBridge尝试索引userdata值（本地'self'）

I've created a wrapper around LuaBridge in my framework, so that I can easily swap out LuaBridge for an alternative library. I have certain classes that get registered with LuaBridge as part of my framework initialization. I can then access or instantiate those classes easily in Lua. The problem comes when I want to call a custom method on a class/table, that has already been registered in the framework init, that I've defined in Lua.I've created a wrapper around LuaBridge in my f