Reference error KEYUTIL not defined in prerequisit-script

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My question:
I am running a collection with few calls I have a post request first to get an a signed API key and I use KEYUTIL to get a key in the prerequisite script which works in POSTMAN but not in Newman

Details (like screenshots):


How I found the problem:
by running the collection in newman

I’ve already tried:

Hi @Dwarak001
There isn’t very much information to go on here, but I would guess that it’s how the first call is setup.

Does it use global variables (or more specifically a variable declaration that isn’t being used in newman?)

You may find the variable scopes section below useful;