-fix bug

ui/src/views/statistics/plantCountChart.vue

@@ -104,10 +104,10 @@ export default {
   },
   mounted() {
     this.$nextTick(() => {
-      this.option.series[0].data=[0];
-      this.option.series[1].data=[0];
-      this.option.series[2].data=[0];
-      this.option.yAxis.data=[''];
+      this.option.series[0].data=[];
+      this.option.series[1].data=[];
+      this.option.series[2].data=[];
+      this.option.yAxis.data=[];
       this.initChart();
     })
   },