Need help with custom vehicle

Hello,

I would like to use this : https://www.gta5-mods.com/paintjobs/mule-25-liveries

I try so many things but nothing work :
First : If I create stream folder with dowloaded file and add vehicle.meta (https://pastebin.com/KeK8bwN5) the game crash when vehicle spawn

Second : I use the same file but I rename mule5 (to create a neww vehicle), The vehicle spawned but they haven’t livery (they have first livery image)

So how to use this on my server?

Thx you
THEJean_Kevin

P.S: Sry for my english, I’m a french people