"Something is creating script error"

[ParrainJules]

I recently installed Gmod.
I constantly get an error message: "Something is creating Script error".

In the console window, I have this:

[ERROR] lua/autorun/cl_falleffect.lua:15: attempt to call global 'Sound' (a string value)
1. fn - lua/autorun/cl_falleffect.lua:15
2. unknown - lua/ulib/shared/hook.lua:109

File exists in two addons - possible conflicts! lua/ulib/shared/hook.lua (ULib and Climb SWEP 2)

What could be the problem?
Knowing that I know nothing about it, thank you for guiding me as well as possible.
Sorry for ma bad english (thanks Google translator!)

P.J.

[c👌de_g🎷]

One of your addons is doing:

Sound = "some_string"

Make it a local.

[ParrainJules]

Thank you for your answer.
How do I do it exactly?

[c👌de_g🎷]

Use a text editor's Find in Files to look through all Lua files for "Sound =" or "Sound=". Alternatively, you could remove addons until the error disappears to narrow down which one is causing it.

[ParrainJules]

Ok, I'v deleted some addon and it's OK.

Thanks.