Newtonsoft.Json.JsonReaderException: Error reading JObject from JsonReader. Path '', line 0, position 0.
   at Newtonsoft.Json.Linq.JObject.Load(JsonReader reader, JsonLoadSettings settings)
   at Newtonsoft.Json.Linq.JObject.Parse(String json, JsonLoadSettings settings)
   at TC.SendInBlue.SendInBlueApi.GetCategoryAttributeValues(String category) in C:\github\TC.SendInBlue\TC.SendInBlue\SendInBlueApi.cs:line 426
   at TC.SendInBlue.SendInBlueService.GetCategoryAttributeValues(String category) in C:\github\TC.SendInBlue\TC.SendInBlue\SendInBlueService.cs:line 215
   at TC.Core.ExtensionMethods.SendInBlue_States(IPublishedContent content, Boolean noCache) in D:\Opening the Book\Umbraco.TC\TC.Core\ExtensionMethods.cs:line 432
   at ASP._Page_Views_Partials_Components_Forms_Custom_US_ContactUs_cshtml.Execute() in D:\Opening the Book\openingthebookuscom\Web_7.15.3\Views\Partials\Components\Forms\Custom\US_ContactUs.cshtml:line 13
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
   at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
   at ASP._Page_Views_Partials_Components_Forms_cFormSelector_cshtml.Execute() in D:\Opening the Book\openingthebookuscom\Web_7.15.3\Views\Partials\Components\Forms\cFormSelector.cshtml:line 38
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
   at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
   at Our.Umbraco.DocTypeGridEditor.Web.Extensions.HtmlHelperExtensions.RenderDocTypeGridEditorItem(HtmlHelper helper, IPublishedContent content, String editorAlias, String viewPath, String previewViewPath)
   at ASP._Page_app_plugins_doctypegrideditor_render_doctypegrideditor_cshtml.Execute() in D:\Opening the Book\openingthebookuscom\Web_7.15.3\app_plugins\doctypegrideditor\render\doctypegrideditor.cshtml:line 28
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
   at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
   at ASP._Page_Views_Partials_grid_editors_base_cshtml.Execute() in D:\Opening the Book\openingthebookuscom\Web_7.15.3\Views\Partials\grid\editors\base.cshtml:line 20