series: <CircularSeries>[
              PieSeries<GDPData, String>(
                dataSource: _chartData,
                xValueMapper: (GDPData data, _) => data.name,
                yValueMapper: (GDPData data, _) => data.gdp,
                dataLabelSettings: DataLabelSettings(isVisible: true),
                explode: true,
                explodeIndex: 1,
              )
            ],

'type 'PieSeriesRendererExtension' is not a subtype of type 'CartesianSeriesRenderer''

CodePudding user response：

Try replacing SfCartesianChart widget with SfCircularChart