Power BI visual : Gantt 3.0.11.0 : Error Too many values

Hi, I'm using Gantt 3.0.11.0 in Power BI visual, the error is " Too many values , not showing all data" . 

This is the minium input data even after maxium reducing data by power queries etc., in input. So I when I use Gantt 3.0.11.0 , the error is " Too many values , not showing all data" . So anyone can suggest how to overcome this error or an alternative for free power BI visual. I could only find this visual Gantt 3.0.11.0 having " group tasks -ON option ( format your visual -> visual) " option. This option is compulsory for me. Thanks for your suggestions any power BI visual with  group tasks -ON optionwith no limitation or max. data. or many suggestions how to increase the data capicity for Gantt 3.0.11.0 to avoid that error.