I am getting ArgumentException when deleting the grouping column on RadzenDataGrid. Below are the screenshort, exception and the UI code. How should I adjust Razor code to avoid the exception?
<RadzenDataGrid Data="@_regions" TItem="RegionInfo" View=""
AllowColumnResize="true" AllowColumnReorder="true" AllowColumnPicking="true" AllowMultiColumnSorting="true"
AllowFiltering="true" AllowGrouping="true" AllowSorting="true" AllowVirtualization="true">
<Columns>
<RadzenDataGridColumn TItem="RegionInfo" Title="Region" Property="@nameof(RegionInfo.RegionName)" Visible="true" />
<RadzenDataGridColumn TItem="RegionInfo" Title="LPAR" Property="@nameof(RegionInfo.Lpar)" Visible="true" />
<RadzenDataGridColumn TItem="RegionInfo" Title="Cycle" Property="@nameof(RegionInfo.Environment)" Visible="true" />
<RadzenDataGridColumn TItem="RegionInfo" Title="Type" Property="@nameof(RegionInfo.EnvironmentType)" Visible="true" />
<RadzenDataGridColumn TItem="RegionInfo" Title="Role" Property="@nameof(RegionInfo.Role)" Visible="true" />
<RadzenDataGridColumn TItem="RegionInfo" Title="Primary TOR" Property="@nameof(RegionInfo.PrimaryTorName)" Visible="true" />
<RadzenDataGridColumn TItem="RegionInfo" Title="Port" Property="@nameof(RegionInfo.Port)" Visible="true" />
<RadzenDataGridColumn TItem="RegionInfo" Title="TLS Port" Property="@nameof(RegionInfo.TlsPort)" Visible="true" />
<RadzenDataGridColumn TItem="RegionInfo" Title="DB2 Database" Property="@nameof(RegionInfo.Db2Database)" Visible="true" />
</Columns>
</RadzenDataGrid>