when there is a problem with removing comment info will be reported to the gui

frontend-js/src/main/js/gui/admin/CommentsAdminPanel.js

@@ -3,6 +3,7 @@
 var AbstractGuiElement = require('../AbstractGuiElement');
 
 var Functions = require('../../Functions');
+var GuiConnector = require('../../GuiConnector');
 // noinspection JSUnusedLocalSymbols
 var logger = require('../../logger');
 
@@ -84,7 +85,7 @@ CommentsAdminPanel.prototype.refreshComments = function () {
             button.style.display = "none";
           });
         }
-      })
+      }).catch(GuiConnector.alert)
     });
   });
 };