(Error) A: Cannot deserialize 15

I am working on writing a script for work, and as of about a week ago I ran into an error that I can’t seem to wrap my brain around. From what I can tell this doesn’t appear to be a standard JavaScript error, and I am concerned as to whether or not this correlates to some sort of change the Airtable development team may have made on the backend? Up until about a week ago a TypeError was causing some hangups, then this arose spontaneously without any changes to my code. Below is a screenshot of the error being thrown:

Difficult to assess without a glimpse of the actual code.

As Bill says, it’s hard to provide specific help without seeing the script in question, but I can tell you that this error comes from passing a function value into a scripting API that doesn’t accept functions. It might be that you’re forgetting to call the function before passing it in. Apologies for the unhelpful error message!