token超时bug处理

frontend/saas-web/overrides/data/Connection.js

@@ -46,7 +46,7 @@ Ext.define('saas.override.data.Connection', {
         return this.callParent([options]);
     },
     onRequestComplete: function(request) {
-        let headers = request.result.getAllResponseHeaders(),
+        let headers = request.result.getAllResponseHeaders() || {},
         Authorization = headers['authorization'];
 
         if(Authorization) {