Keep getting this error

i keep getting this issue after doing the steps as boss has stated about doing add-on vehicles for server and client side

I never mentoined any ‘add-on’ vehicles?

You didn’t @Boss oh okay then I guess now my question is “are add-on vehicles supported server-side streaming?” "If not then when will we as server owners have the ability to stream add-on vehicles for our server and be able to make them work for players "

it is possible client sided but its very hard to get it working