pie label 圆环中间显示内容重叠 Overlaps in the middle of the circle (text appears at the bottom)-Echart4-pie

[smile-xm]

option = {
tooltip: {
trigger: 'item',
formatter: '{a}
{b}: {c} ({d}%)'
},
legend: {
orient: 'vertical',
left: 10,
data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎']
},
series: [
{
name: '访问来源',
type: 'pie',
radius: ['50%', '70%'],
avoidLabelOverlap: false,
label: {
show: false,
position: 'center',
normal: {
show: true,
position: 'center',
textStyle: {
fontSize: '14',
color: '#333'
}, formatter: '{c}\n{b}'
}
},
emphasis: {
label: {
show: true,
fontSize: '30',
fontWeight: 'bold'
}
},
labelLine: {
show: false
},
data: [
{value: 335, name: '直接访问'},
{value: 310, name: '邮件营销'},
{value: 234, name: '联盟广告'},
{value: 135, name: '视频广告'},
{value: 1548, name: '搜索引擎'}
]
}
]
};

[echarts-bot]

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[smile-xm]

This problem occurred echarts4 pie