NEZ-663 fix: 修改部分报错问题

nezha-fronted/src/components/charts/line-chart-block.vue

@@ -979,7 +979,7 @@ export default {
 
             self.$refs['localLoading' + self.chartIndex].endLoading()
             self.firstShow = true // 展示操作按键
-          }, 100)
+          }, 800)
 
           window.addEventListener('resize', this.chartResize)
           getChart(this.chartIndex).on('magictypechanged', function (params) {

nezha-fronted/src/components/page/dashboard/panel.vue

@@ -514,7 +514,9 @@ export default {
               this.filter.panelId = this.showPanel.id
             }
             this.$nextTick(() => {
+              try {
                 this.$refs.selectPanel.$refs.panelTree.setCurrentKey(this.showPanel)
+              } catch (e) {}
             })
           } else {
             this.showPanel.id = ''