Attempt to index nil with 'FindFirstChild' error but the script works?

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#1

So I made a sprinting local script. The script itself works as it should but I keep getting this error:

Players.Zombie2358.PlayerGui.Sprint:23: attempt to index nil with 'FindFirstChild'  -  Client - Sprint:23

But the script works.
Here is the part which shows the error:

22  local charhum = char:FindFirstChild("Humanoid")
23  local animator = charhum:FindFirstChild("Animator")
24  local loadedAnim = animator:LoadAnimation(animObj)

I don’t know if I did something wrong or if it is a Roblox issue because the script manages to find Animator and works as expected. Any feedback would be appreciated.

#2

Try replacing :FindFirstChild(“Humanoid”) with :WaitForChild(“Humanoid”) there’s always the possibility the script is trying to reference the humanoid before it’s loaded causing it to return nil

#3

now it says “attempt to index nil with ‘WaitForChild’”. But the script still works…

#4

Nevermind, I have managed to fix it by locating the Humanoid at the beginning of the script.