sirenEdit doesn't work properly

[Fernando-A-Rocha]

Which resource(s) have this problem?
sirenEdit

Describe the bug
It's missing the cpicker resource and doing /sirens in certains vehicles will cause an error in the initUI function in script.lua.

To Reproduce
start sirenEdit
enter a Police LV car
use /sirens => error occurs
click Colour button => error occurs

Expected behavior
no errors (robust script to handle all cases), and a working color picker

Screenshots

Version
Multi Theft Auto v1.6-release-22596
Latest MTA default resources as of posting this

[T-MaxWiese-T]

Regarding the resource "cpicker". You can find it here: https://community.multitheftauto.com/index.php?p=resources&s=details&id=3247 . However, I do not know what the copyright situation is as to whether the resource may be added to the mtasa-resources repository.
An alternative would perhaps be to use the colorpicker in the "freeroam" resource as a template or to outsource the colorpicker to a separate resource so that all resources can access it via functions as with the "cpicker" resource.

[T-MaxWiese-T]

I think the reason why an error was displayed is because you did not select a siren type. But the resource is not very user friendly and errors should be displayed in the GUI or in the chat.