[HOW-TO] Fix "Execution of native 000000002f7a49e6 in script host failed"

FiveM Resource Development & Modding Modding Tutorials
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Hello!

I’ve made a script recently and encountered the error like in the title and it took me over a Day to finally find an answer. Thats why I’m making this topic, so people don’t have to search for a solution longer than 3 Minutes!

What is this error?

This error indicates that a native function (function provided by the FiveM API) failed to execute properly.

What this means

The above means, that the error could happen because of the following things:

  • Invalid arguments
  • Timing issues
  • Function being used improperly or in the wrong context

Probable Causes

  • Invalid entity or player
  • Incorrect usage
  • Uninitialized variables
  • Resource or script conflict

Fixes:

Something that fixed the problem for me, was as simple as creating a new variable, but this may vary from case to case.

1. Using source directly:

My problem:
I used source directly as a variable in my server.lua, which can sometimes conflict with its default meaning (the player ID of the client that triggered the event).

Fix:
I’ve added a variable named _source and replaced every source with the newly created variable. It doesn’t have to be named _source, but I recommend it as it’s going to be easier to know what the variable is.

Before:

print(source)

After:

local _source = source
print(source)
Source: Execution of native 000000002f7a49e6 in script host failed FIX by DennisFusha (github.com)

2. Invalid Entity:

Problem:
The entity you could be referencing didn’t exist or had been deleted before calling a native function

Fix:
Check if the entity exists before using it in your native function.
This can be done using DoesEntityExist(entityId) or similar natives.

Before:

SetVehicleEngineOn(vehicle, true, true, false)

After:

if DoesEntityExist(vehicle) then
    SetVehicleEngineOn(vehicle, true, true, false)
else
    print("Vehicle does not exist")
end

3. Timing Issues:

Problem:
Natives were being called too early, for example, before the player or entity had fully loaded.

Fix:
Add a delay using Citizen.Wait() before calling the native, giving the server or client enough time to load entities.

Before:

local ped = GetPlayerPed(-1)
DoSomethingWithPed(ped)

After:

Citizen.Wait(500) -- Half a second
local ped = GetPlayerPed(-1)
DoSomethingWithPed(ped)

4. Incorrect argument

Problem:
A native function was being passed the wrong argument type (e.g., string instead of number).

Fix:
Ensure you pass the correct argument types as specified in the FiveM documentation.

Before:

TriggerClientEvent('myEvent', source, "not a number")

After:

TriggerClientEvent('myEvent', source, tonumber("123")) -- Convert to integer

Reminder

I did not test if any after the first one work or not as I did not have the issue. If issues persist, you can try creating your own topic in help, or read the FiveM Community Documentation or check through Stack Overflow or GitHub Issues/Pull Requests

Did this topic help you?

If any of the above fixes helped you, be kind and contribute to the poll.
If none helped you, follow the reminder above, or commend under this topic.

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