ASP.net Core 3.1 Could not parse the JSON file
I think0x0D is the Carriage Return character (\r). I've had a similar problem where I had a path that contained backslashes where the backslashes were interpreted as escaped characters (see my answer to a different question on that here).
I don't know how to put multi-line strings in your file but knowing why it fails could possibly help you in your debugging.
I would've kept that statement on a single line.