server/AyaNova/biz/ReportBiz.cs

@@ -346,6 +346,13 @@ namespace AyaNova.Biz
                 return null;
             }
 
+            //Client meta data is required
+            if (reportParam.ClientMeta == null)
+            {
+                AddError(ApiErrorCode.VALIDATION_MISSING_PROPERTY, null, "ClientMeta parameter is missing and required to render report");
+                return null;
+            }
+
 
             //Get data
             var ReportData = await GetReportData(new ReportDataParameter() { ObjectType = report.ObjectType, SelectedRowIds = reportParam.SelectedRowIds, DataListKey = reportParam.DataListKey, ListView = reportParam.ListView });
@@ -417,10 +424,8 @@ namespace AyaNova.Biz
 
                     log.LogDebug($"Preparing page: adding Client meta data");
 
-                    //Client meta data
-                    var clientMeta = "{}";
-                    if (reportParam.ClientMeta != null)
-                        clientMeta = reportParam.ClientMeta.ToString();
+                    //Client meta data to JSON string
+                    var clientMeta = reportParam.ClientMeta.ToString();
 
                     log.LogDebug($"Preparing page: adding Server meta data");
                     //Server meta data