Fetch next line from flat file : Error = 3003

Hello All,

We are using "Fetch next line from flat file" BSFN in one of the custom objects and it is returning an error code as 3003 i.e., unable to open the flat file.

However, I used the same function in a non-production environment, and it was working fine, but after deploying the same program to production, I am facing the issue.

Can anyone shed some light on the exact cause of the issue?

App Release: 9.2

TR: 9.2.5.3