更改接通率

src/views/dashboard/PanelGroup.vue

@@ -31,7 +31,7 @@
         <div class="card-panel " @click="handleSetLineChartData('messages')">
           <img src="@/assets/images/top-h3.png" class="card-panel-icon-wrapper topPng">
           <div class="card-panel-description">
-            <count-to :start-val="0" :end-val="(statistics.turnOnRate * 100)" :duration="3000" class="card-panel-num" />
+            <count-to :start-val="0" :end-val="(statistics.turnOnRate ? statistics.turnOnRate * 100 : 0)" :duration="3000" class="card-panel-num" />
             <div class="card-panel-text">
               接通率(%)
             </div>