CN-820 fix: 修复地图报错问题

src/views/charts2/charts/npm/NpmIpMap.vue

@@ -99,13 +99,12 @@ export default {
         }
         if (params.type === 'serverIp' || params.type === 'clientIp') params.type = 'ip'
         getData(api.npm.overview.map, params).then(res => {
+          this.showError = false
+          if (res && res.length > 0) {
             const subParams = {
               ...params,
               params: res.map(r => `'${r.country}'`).join(',')
             }
-
-          this.showError = false
-
             // 计算分数
             const tcpRequest = get(api.npm.overview.mapTcp, subParams)
             const httpRequest = get(api.npm.overview.mapHttp, subParams)
@@ -141,6 +140,7 @@ export default {
               })
               this.loadMarkerData(imageSeries, mapData)
             })
+          }
         }).catch(e => {
           this.showError = true
           this.errorMsg = e.message