我正尝试在flutter中运行库中的图表。我无法使用main.dart运行。主飞镖:import'./widgets/chart.dart';voidmain(){runApp(newMaterialApp(home:PointsLineChart(),),);}图表.飞镖:import'package:flutter/material.dart';import'package:charts_flutter/flutter.dart'ascharts;classPointsLineChartextendsStatelessWidget{finalListseriesList;final

我正尝试在flutter中运行库中的图表。我无法使用main.dart运行。主飞镖:import'./widgets/chart.dart';voidmain(){runApp(newMaterialApp(home:PointsLineChart(),),);}图表.飞镖:import'package:flutter/material.dart';import'package:charts_flutter/flutter.dart'ascharts;classPointsLineChartextendsStatelessWidget{finalListseriesList;final