Error Rendering Sitecore.JavaScriptServices.ViewEngine.Presentation.JsLayoutRenderer: Value cannot be null. Parameter name: address

Question

I am using Sitecore 9.1. I can able to run my sample angular application in connected mode using the command ">jss start:connected".

But i cant able to open my site in local integrated mode , even in experience editor mode. Its throwing below error

Below image is in normal mode.

Below image is in experience mode.

Error Rendering Sitecore.JavaScriptServices.ViewEngine.Presentation.JsLayoutRenderer: Value cannot be null. Parameter name: address**
    at System.Net.WebClient.UploadString(String address, String data)
    at Sitecore.JavaScriptServices.ViewEngine.NodeServices.HostingModels.Http.HttpNodeInstance.InvokeExport[T](NodeInvocationInfo invocationInfo)
    at Sitecore.JavaScriptServices.ViewEngine.NodeServices.HostingModels.OutOfProcessNodeInstance.InvokeExport[T](String moduleName, String exportNameOrNull, Object[] args)
    at Sitecore.JavaScriptServices.ViewEngine.NodeServices.DefaultNodeServices.InvokeExportWithPossibleRetry[T](String moduleName, String exportedFunctionName, Object[] args, Boolean allowRetry)
    at Sitecore.JavaScriptServices.ViewEngine.NodeServices.DefaultNodeServices.InvokeExportWithPossibleRetry[T](String moduleName, String exportedFunctionName, Object[] args, Boolean allowRetry)
    at Sitecore.JavaScriptServices.ViewEngine.NodeServices.DefaultNodeServices.InvokeExport[T](String moduleName, String exportedFunctionName, Object[] args)
    at Sitecore.JavaScriptServices.ViewEngine.Node.NodeRenderEngine.Invoke[T](String moduleName, String functionName, Object[] functionArgs)
    at Sitecore.JavaScriptServices.ViewEngine.Presentation.JssRenderer.PerformRender(TextWriter writer, IRenderEngine renderEngine, String moduleName, String functionName, Object[] functionArgs)
    at Sitecore.JavaScriptServices.ViewEngine.Presentation.JssRenderer.Render(TextWriter writer)
    at Sitecore.Mvc.Pipelines.Response.RenderRendering.ExecuteRenderer.Render(Renderer renderer, TextWriter writer, RenderRenderingArgs args)

My scconfig.json below

{
  "sitecore": {
    "instancePath": "C:\\inetpub\\wwwroot\\sc910.sc",
    "apiKey": "{A3175524-032C-40F2-88EA-E3C9D57B8D40}",
    "deploySecret": "6g9003yzzjr14fgu0lojm8ccj6ztqsnodpyr6yrlgjttr",
    "deployUrl": "http://sc910.sc/sitecore/api/jss/import",
    "layoutServiceHost": "http://my-angular.dev.local"
  }
}

I checked node path environment variable als. Everything fine. How to troubleshoot this.

Answer 1

I would start by checking your node version to ensure it is the latest LTS version (currently 10.15.1), which is what we generally recommend: https://jss.sitecore.com/docs/getting-started/jss-server-install#nodejs

The error you're seeing basically indicates that the node.exe instance is not running and that the Sitecore-to-Node rendering engine is not able to communicate with the Node instance.

Note: you may be able to use Node 8.11 or greater, but we'd still recommend latest LTS. Your mileage may vary.