Hello

When the plugin starts or I reload it I get these error messages in the console :
Calling kill - but already IsDestroyed!? cratemarker[0]
it doesn't stop the plugin from working but it spams the console significantly

It has to do with this added a few months ago: https://commits.facepunch.com/465498

There was another fix to fix the NRE but I don't think it ever got added. It will fix the spam but it wont fix the fact your locked crate map marker is pretty much non existent. Im actually surprised no one is noticing this fact.

Reporting a similar issue, anf resolved it.  Turns out that SpawnNPC doesn't like the Chinook Locked Crate.

      "Loot": {
        "Use loot Rust": false,
        "Use loot Kit": false,
        "Use Loot Extra": false,
        "Use loot Crates": true,
        "Name crates loot": [
          "chinooklockedcrate" <--- Changed to a different loot container.
        ],