Google Sheets / IMPORTjson(): How to Resolve "Invalid Argument" Error [closed]

Using the Google Sheets IMPORTjson AppScript function, I'm try to pass this long URL and keep getting the error "Exception: Invalid argument:" as a response.

The formula I'm using is =ImportJSON(B1,"/") where B1 is the URL. Cell B1 with and without the HYPERLINK() function has the same result.

What is invalid in the argument and is there an adjustment that can make it valid?