Spawn errors with simple and menyoo trainers

[Godslayer201]

Updated my GTA V(epic),however when spawning certain vehicles,the spawn and instantly despawn. what should I do? No mods installed

[Algonquin1234]

That is a Rockstar implemented feature to prevent PC players from spawning cars in Single Player. Have you tried Add-on vehicle spawner mod? It's an ASI that most of us used when trainers weren't updated yet.