invalid character 'ï' looking for beginning of value

[Owner of this repository]

I used sharexin-section to make a screenshot

After the screenshot was made, I got the error invalid character 'ï' looking for beginning of value

my json file looks like

{
  "DestinationType": "ImageUploader",
  "RequestURL": "myurl",
  "FileFormName": "image",
  "Arguments": {
    "endpoint": "upload",
    "token": "publicshare"
  },
  "URL": "$json:url$",
  "DeletionURL": "$json:deletion_url$"
  }