Delta i ett nytt experiment

System.InvalidOperationException: Headers are read-only, response has already started. at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpHeaders.ThrowHeadersReadOnlyException() at Microsoft.AspNetCore.Http.ResponseCookies.Append(String key, String value, CookieOptions options) at Microsoft.AspNetCore.CookiePolicy.ResponseCookiesWrapper.Append(String key, String value, CookieOptions options) at Microsoft.AspNetCore.Mvc.ViewFeatures.HtmlHelper.AntiForgeryToken() at AspNetCoreGeneratedDocument.KitModules_Form_Views_Components_ConsentFormBlock_FormContainerBlock.<>c__DisplayClass0_0.<g__RenderFormBody|0>d.MoveNext() in D:\a\1\s\Miun.Web\KitModules\Form\Views\Components\ConsentFormBlock\FormContainerBlock.cshtml:line 53 --- End of stack trace from previous location --- at AspNetCoreGeneratedDocument.KitModules_Form_Views_Components_ConsentFormBlock_FormContainerBlock.ExecuteAsync() in D:\a\1\s\Miun.Web\KitModules\Form\Views\Components\ConsentFormBlock\FormContainerBlock.cshtml:line 216 at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context) at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts) at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context) at Microsoft.AspNetCore.Mvc.ViewComponents.ViewViewComponentResult.ExecuteAsync(ViewComponentContext context) at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context) at EPiServer.Cms.AspNetCore.Mvc.Internal.DefaultMvcContentRenderer.RenderAsync(ViewContext viewContext, IContentData contentData, TemplateModel templateModel, String templateTag) at EPiServer.Cms.AspNetCore.Mvc.Internal.DefaultMvcContentRenderer.RenderAsync(IHtmlHelper helper, IContentData contentData, TemplateModel templateModel) at EPiServer.Web.Mvc.Html.HtmlGenerator.RenderContentDataAsync(IContentData contentData, ViewContext viewContext, Boolean isContentInContentArea, TemplateModel templateModel, String templateTag, IContentRenderer contentRenderer) at EPiServer.Web.Mvc.Html.HtmlGenerator.RenderFragment(IStringFragment fragment, ViewContext viewContext, VirtualPathArguments virtualPathArguments) at EPiServer.Web.Mvc.Html.HtmlGenerator.RenderXhtmlStringAsync(XhtmlString xhtmlString, ViewContext viewContext, VirtualPathArguments virtualPathArguments) at Miun.Web.Infrastructure.Handlebars.HandlebarsTemplateEngine.xhtmlHelper(EncodedTextWriter output, Context context, Arguments arguments) in D:\a\1\s\Miun.Web\Infrastructure\Handlebars\HandlebarsTemplateEngine.cs:line 133 at HandlebarsDotNet.Helpers.DelegateHelperDescriptor.HandlebarsDotNet.Helpers.IHelperDescriptor.Invoke(EncodedTextWriter& output, HelperOptions& options, Context& context, Arguments& arguments) at lambda_method377(Closure, EncodedTextWriter&, BindingContext) at HandlebarsDotNet.HandlebarsEnvironment.<>c__DisplayClass19_0.b__0(TextWriter writer, Object context, Object data) at Miun.Web.Infrastructure.Handlebars.HandlebarsTemplateEngine.RenderTemplateHelper(EncodedTextWriter output, Context context, Arguments arguments) in D:\a\1\s\Miun.Web\Infrastructure\Handlebars\HandlebarsTemplateEngine.cs:line 205System.InvalidOperationException: Headers are read-only, response has already started. at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpHeaders.ThrowHeadersReadOnlyException() at Microsoft.AspNetCore.Http.ResponseCookies.Append(String key, String value, CookieOptions options) at Microsoft.AspNetCore.CookiePolicy.ResponseCookiesWrapper.Append(String key, String value, CookieOptions options) at Microsoft.AspNetCore.Mvc.ViewFeatures.HtmlHelper.AntiForgeryToken() at AspNetCoreGeneratedDocument.KitModules_Form_Views_Components_ConsentFormBlock_FormContainerBlock.<>c__DisplayClass0_0.<g__RenderFormBody|0>d.MoveNext() in D:\a\1\s\Miun.Web\KitModules\Form\Views\Components\ConsentFormBlock\FormContainerBlock.cshtml:line 53 --- End of stack trace from previous location --- at AspNetCoreGeneratedDocument.KitModules_Form_Views_Components_ConsentFormBlock_FormContainerBlock.ExecuteAsync() in D:\a\1\s\Miun.Web\KitModules\Form\Views\Components\ConsentFormBlock\FormContainerBlock.cshtml:line 216 at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context) at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts) at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context) at Microsoft.AspNetCore.Mvc.ViewComponents.ViewViewComponentResult.ExecuteAsync(ViewComponentContext context) at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context) at EPiServer.Cms.AspNetCore.Mvc.Internal.DefaultMvcContentRenderer.RenderAsync(ViewContext viewContext, IContentData contentData, TemplateModel templateModel, String templateTag) at EPiServer.Cms.AspNetCore.Mvc.Internal.DefaultMvcContentRenderer.RenderAsync(IHtmlHelper helper, IContentData contentData, TemplateModel templateModel) at EPiServer.Web.Mvc.Html.HtmlGenerator.RenderContentDataAsync(IContentData contentData, ViewContext viewContext, Boolean isContentInContentArea, TemplateModel templateModel, String templateTag, IContentRenderer contentRenderer) at EPiServer.Web.Mvc.Html.HtmlGenerator.RenderFragment(IStringFragment fragment, ViewContext viewContext, VirtualPathArguments virtualPathArguments) at EPiServer.Web.Mvc.Html.HtmlGenerator.RenderXhtmlStringAsync(XhtmlString xhtmlString, ViewContext viewContext, VirtualPathArguments virtualPathArguments) at Miun.Web.Infrastructure.Handlebars.HandlebarsTemplateEngine.xhtmlHelper(EncodedTextWriter output, Context context, Arguments arguments) in D:\a\1\s\Miun.Web\Infrastructure\Handlebars\HandlebarsTemplateEngine.cs:line 133 at HandlebarsDotNet.Helpers.DelegateHelperDescriptor.HandlebarsDotNet.Helpers.IHelperDescriptor.Invoke(EncodedTextWriter& output, HelperOptions& options, Context& context, Arguments& arguments) at lambda_method377(Closure, EncodedTextWriter&, BindingContext) at HandlebarsDotNet.HandlebarsEnvironment.<>c__DisplayClass19_0.b__0(TextWriter writer, Object context, Object data) at Miun.Web.Infrastructure.Handlebars.HandlebarsTemplateEngine.RenderTemplateHelper(EncodedTextWriter output, Context context, Arguments arguments) in D:\a\1\s\Miun.Web\Infrastructure\Handlebars\HandlebarsTemplateEngine.cs:line 205 at HandlebarsDotNet.Helpers.DelegateHelperDescriptor.HandlebarsDotNet.Helpers.IHelperDescriptor.Invoke(EncodedTextWriter& output, HelperOptions& options, Context& context, Arguments& arguments) at lambda_method624(Closure, EncodedTextWriter&, BindingContext) at HandlebarsDotNet.HandlebarsEnvironment.<>c__DisplayClass19_0.b__0(TextWriter writer, Object context, Object data) at Miun.Web.Infrastructure.Handlebars.HandlebarsTemplateEngine.RenderTemplateHelper(EncodedTextWriter output, Context context, Arguments arguments) in D:\a\1\s\Miun.Web\Infrastructure\Handlebars\HandlebarsTemplateEngine.cs:line 205