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DotNetNuke.Entities.Urls.UrlRewriterUtils - System.ArgumentNullException

Working on a DNN (9.2) module and am getting the following error in the DNN log file when trying to call http://dnndev.me/desktopmodules/rentalz/server.ashx directly from URL address bar in browser:

        DotNetNuke.Entities.Urls.UrlRewriterUtils - System.ArgumentNullException: 
        Value cannot be null.
        Parameter name: url
        at System.Web.HttpResponse.Redirect(String url, 
        Boolean endResponse, Boolean permanent)    
        at DotNetNuke.Entities.Urls.AdvancedUrlRewriter.ProcessRequest(
        HttpContext context, Uri requestUri, Boolean useFriendlyUrls,
        UrlAction result, FriendlyUrlSettings settings, 
        Boolean allowSettingsChange, Guid parentTraceId)

When I remove the following entry from the Web.config file, the ASHX page works, but the rest of the site bombs out!

<add name="UrlRewrite" type="DotNetNuke.HttpModules.UrlRewriteModule,
    DotNetNuke.HttpModules" preCondition="managedHandler" />

Does anyone know what's causing this?

Solution

  • This request shouldn't be handled by the URL rewriter, it ignores ashx requests by default. You can go to the SEO Settings page, and check the Expressions tab under URL Management to see if ashx is listed in the Do Not Rewrite URL Regular Expression. You can also go the the Test URL tab and put your URL in to see what sort of rewriting the system is trying to perform.