高图，垂直于x轴的线未显示

Question

这是我的JSON

"

chart:{
   gridLineWidth: 0,
   minorGridLineWidth: 0,
   gridLineColor: 'transparent',
   tickWidth: 0,
   animation: false,
   backgroundColor: 'rgb(0, 21, 41)',
   style: {
            color: 'white',
            fontFamily: 'OpenSans'
         }
},
yAxis:{
   gridLineWidth: 0,
   minorGridLineWidth: 0,
   gridLineColor: 'transparent',
   allowDecimals:true,
   opposite:true,
   tickWidth: 0,
   labels: {
         style: {
            color: 'white',
            fontFamily: 'OpenSans',
            fontSize: '11px',
            fontWeight: '600',
            textAlign: 'center'
         },
         useHTML: true,
         formatter: function() {
         
          if (1==1) {
            var num = this.value;
            return '<span style=background-color:rgba(73,134,191,0.2);float:left;padding-top:2px;padding-bottom:2px;padding-right:5px;padding-left:5px;font-family:OpenSans;border-radius:50px;min-width:39px;>'+ num +'</span>';
          }
    }  
}
},
xAxis:{
   gridLineWidth: 0,
   minorGridLineWidth: 0,  
   gridLineColor: 'transparent',
   LineColor: 'transparent',
   tickWidth: 0,
   tickWidth: 0,
   labels:{  
      style: {
            color: 'white',
            fontFamily: 'OpenSans',
            fontSize: '11px',
            fontWeight: '600',
            textAlign: 'center'
         },
         useHTML: true,
         formatter: function() {
         
          if (1==1) {
            var num = this.value;
            return '<span style=background-color:rgba(73,134,191,0.2);float:left;padding-top:2px;padding-bottom:2px;padding-right:5px;padding-left:5px;font-family:OpenSans;border-radius:50px;min-width:39px;>'+ num +'</span>';
          }
    }  
   }
},
plotOptions:{
   series:{
        connectNulls: true,
        marker: {
                enabled:false
            },
        states: {
          normal: {
            opacity: 1
          },
          hover: {
            enabled: true,
            lineWidth: 2
          }
       },
     lineWidth: 2,
     color: {
            linearGradient: { x1: 0, x2: 0, y1: 0, y2: 1 },
            stops: [
                [0, 'seagreen'],
                [0.25, 'green'],
                [0.50, 'lightgreen'],
                [0.75, 'yellow'],
                [1, 'red']
            ]
        },
      animation:true
   }
},
series: [{
      point: {
        events: {
          mouseOver: function(e) {
            var tick = findTick(this.x, this.series.xAxis.ticks, 0);
            this.selectedTick = tick;
            
            if (tick) {
              tick.label.css({
                fontSize: '14px',
              });
          }},
          mouseOut: function(e) {
            if (this.selectedTick) {
              this.selectedTick.label.css({
                fontSize: '11px'
              });
              this.selectedTick = null;
        }
    }}},
    marker: {
        symbol: ""url(/NAPP_BdP/img/NAPP_BdP.Marker.png)""
    }
    }
]
"

这行得通，已经过测试和工作，但是我们发现了一个错误，每当结果线垂直于x轴（水平）时，它都不会画线，如果启用了标记，它将显示标记在水平结果中，但是无论如何都不会显示该线，我尝试了connectNulls = true，但是无论如何都没有工作，试图禁用/启用标记，但是也没有工作。

那么，我该如何解决这个问题？

谢谢！