Added error message if ceilometer fail
diff --git a/views/ngXosViews/diagnostic/src/js/logicTopology.js b/views/ngXosViews/diagnostic/src/js/logicTopology.js
index f88b80a..5ab5d0f 100644
--- a/views/ngXosViews/diagnostic/src/js/logicTopology.js
+++ b/views/ngXosViews/diagnostic/src/js/logicTopology.js
@@ -17,6 +17,7 @@
         var svg;
         this.selectedInstances = [];
         this.hideInstanceStats = true;
+        var _this = this;
 
         const handleSvg = (el) => {
 
@@ -61,6 +62,12 @@
           .then((instances) => {
             LogicTopologyHelper.updateTree(svg);
           })
+          .catch(e => {
+            _this.error = 'Service statistics are not available at this time. Please try again later.'
+            $timeout(() => {
+              _this.error = null;
+            }, 2000);
+          })
         });
 
         d3.select(window)