EF7, what is wrong with my relation here? - asp.net

Question

The relation seams to be find and works with other example but when trying to get with all of the possible Include it fails with the error.
Widget widget = _dbContext.Widgets.Where(w => w.Id == id)
.Include(w => w.DataSource)
.ThenInclude(d => d.DataSourceParams)
.ThenInclude(p => p.DataSourceParamProc)
.ThenInclude(s => s.DataSourceParamProcParams)
.Include(w => w.DataSource)
.ThenInclude(d => d.DataSourceParams)
.ThenInclude(p => p.SelectOptions)
.FirstOrDefault();
POCO's:
public class Widget
{
public int Id { get; set; }
public string Title { get; set; }
public int DataSourceId { get; set; }
public string Colour { get; set; }
public string Icon { get; set; }
public virtual DataSource DataSource { get; set; }
}
public class DataSource
{
public int Id { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public string StoredProc { get; set; }
public string DataBaseName { get; set; }
public virtual ICollection<DataSourceParam> DataSourceParams { get; set; }
}
public class DataSourceParam
{
public int Id { get; set; }
public int DataSourceId { get; set; }
public string Name { get; set; }
public int TypeId { get; set; }
public virtual DataSource DataSource { get; set; }
public virtual DataSourceParamProc DataSourceParamProc { get; set; }
}
public class DataSourceParamProc
{
public int Id { get; set; }
public string StoredProc { get; set; }
public string DataBaseName { get; set; }
[ForeignKey("DataSourceParam")]
public int DataSourceParamId { get; set; }
public virtual DataSourceParam DataSourceParam { get; set; }
public virtual ICollection<DataSourceParamProcParam> DataSourceParamProcParams { get; set; }
}
public class DataSourceParamProcParam
{
public int Id { get; set; }
public string Name { get; set; }
public string DefaultValue { get; set; }
public int DataSourceParamProcId { get; set; }
}
public class SelectOption
{
public int Id { get; set; }
public string Value { get; set; }
public string Label { get; set; }
public int DataSourceParamId { get; set; }
public virtual DataSourceParam DataSourceParam { get; set; }
}
I'm getting error :
A column has been specified more than once in the order by list. Columns in the order by list must be unique.
If I comment this line it works:
Widget widget = _dbContext.Widgets.Where(w => w.Id == id)
.Include(w => w.DataSource)
.ThenInclude(d => d.DataSourceParams)
.ThenInclude(p => p.DataSourceParamProc)
//.ThenInclude(s => s.DataSourceParamProcParams)
.Include(w => w.DataSource)
.ThenInclude(d => d.DataSourceParams)
.ThenInclude(p => p.SelectOptions)
.FirstOrDefault();
Or If I comment this one it works as well:
Widget widget = _dbContext.Widgets.Where(w => w.Id == id)
.Include(w => w.DataSource)
.ThenInclude(d => d.DataSourceParams)
.ThenInclude(p => p.DataSourceParamProc)
.ThenInclude(s => s.DataSourceParamProcParams)
//.Include(w => w.DataSource)
// .ThenInclude(d => d.DataSourceParams)
// .ThenInclude(p => p.SelectOptions)
.FirstOrDefault();
If I separate this it works as well:
Widget widget = _dbContext.Widgets.Where(w => w.Id == id)
.Include(w => w.ChartAttributes)
.ThenInclude(c => c.ChartAttributeType)
.Include(w => w.WidgetCategory)
.Include(w => w.WidgetSeries)
.Include(w => w.WidgetType)
.FirstOrDefault();
DataSource ds = _dbContext.DataSources.Where(d => d.Id == widget.DataSourceId)
.Include(d => d.DataSourceParams)
.ThenInclude(p => p.SelectOptions)
.Include(d => d.DataSourceParams)
.ThenInclude(p => p.DataSourceParamProc)
.ThenInclude(s => s.DataSourceParamProcParams).FirstOrDefault();
widget.DataSource = ds;