Check if there are mobs alive

[tonibm19]

What else can I tell you? You didn't say what the error was, you didn't post your code, nothing. So there's really nothing else I can say.

The error is with the code you post there. Error with GetWorld (a nil value)

[xoft]

What is the exact error message?

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Either your Player object is nil, so you cannot call GetWorld() on it, or the player is not inside a world yet, so GetWorld() returns a nil world, or there's a bug in the generated Lua bindings code.