server/AyaNova/biz/ReportBiz.cs

@@ -450,6 +450,10 @@ namespace AyaNova.Biz
                 }
                 catch (System.Exception ex)
                 {
+                    //This is the error when a helper is used on the template but doesn't exist:
+                    //Evaluation failed: d
+                    //(it might also mean other things wrong with template)
+
                     // var v=await page.GetContentAsync();
                     throw ex;
                 }