(function() {
  'use strict';

  function SparqlController($scope, AuthenticationService, SparqlService) {
    this.resultText = '';
    this.errorMessage = '';

    AuthenticationService.ready.then(function() {
      SparqlService.doQuery().then(function (result){
        if( typeof(result) === 'string' ){
          if( result === '' ){
            this.errorMessage = 'Something went wrong. Please check that the Flask app is running on https://shrouded-gorge-9256.herokuapp.com/ Or install locally.';
          } else {
            this.errorMessage = result;
          }
        }
      }.bind(this));

    }.bind(this));
  }

  angular.module('uncertApp.sparql').controller('SparqlController', SparqlController);
})();

(function() {
  'use strict';

  function SparqlController($scope, AuthenticationService, SparqlService) {
    this.resultText = '';
    this.errorMessage = '';

    AuthenticationService.ready.then(function() {
      SparqlService.doQuery().then(function (result){
        if( typeof(result) === 'string' ){
          if( result === '' ){
            this.errorMessage = 'Please check whether the Flask app is running on http://127.0.0.1:5000/';
          } else {
            this.errorMessage = result;
          }
        }
      }.bind(this), function (error){

      });

    }.bind(this));
  }

  angular.module('uncertApp.sparql').controller('SparqlController', SparqlController);
})();

--- 
+++ 
@@ -9,12 +9,14 @@
       SparqlService.doQuery().then(function (result){
         if( typeof(result) === 'string' ){
           if( result === '' ){
-            this.errorMessage = 'Something went wrong. Please check that the Flask app is running on https://shrouded-gorge-9256.herokuapp.com/ Or install locally.';
+            this.errorMessage = 'Please check whether the Flask app is running on http://127.0.0.1:5000/';
           } else {
             this.errorMessage = result;
           }
         }
-      }.bind(this));
+      }.bind(this), function (error){
+
+      });
 
     }.bind(this));
   }
Update error message when flask sparql app does not work
