The getURL function is returning error "response content length cant be greater than 5 MB"

The getURL function is returning error "response content length cant be greater than 5 MB"

Hello 

I am working on code to download a file from a URL using the getURL function running through Zoho Flow, but I am getting the error that the response content length cannot be greater than 5 MB.
However, according to the API doc for the API task, it says "using this task, you can download files of size up to 50 MB.". 

That said, the file is less than 1MB, in fact less than 500KB.

So, what is the problem and what is the solution to this?

Thanks.