渐变色没有适配 new echarts.graphic.RadialGradient

areaStyle: {
color: new echarts.graphic.RadialGradient(0.1, 0.6, 1, [
{
color: 'rgba(255, 145, 124, 0.1)',
offset: 0
},
{
color: 'rgba(255, 145, 124, 0.9)',
offset: 1
}
])
}