# bug fixed, empty screen

src/views/counter/detail.vue

@@ -78,6 +78,12 @@
 import { fetchDeviceList, fetchDeviceLogs } from '@/api/counter'
 import Screen from './components/screen'
 import Chart from './components/chart'
+
+const defaultLastItem = {
+  mosq_count: '0',
+  signal: '0',
+  energy: '0'
+}
 export default {
   name: 'deviceDetail',
   components: {
@@ -123,6 +129,9 @@ export default {
         this.lineChartData.total.xAxis = dateList.reverse()
         this.listLoading = false
         this.lastItem = this.deviceLogs[0]
+        if (this.lastItem === undefined) {
+          this.lastItem = defaultLastItem
+        }
         this.flag = true
       })
     },