diff --git a/src/app/topic/indicators.component.ts b/src/app/topic/indicators.component.ts
index bf929c7..f7a5307 100644
--- a/src/app/topic/indicators.component.ts
+++ b/src/app/topic/indicators.component.ts
@@ -125,9 +125,13 @@ export class IndicatorsComponent implements OnInit, OnDestroy, OnChanges, AfterV
       this.filterCharts();
       this.filterNumbers();
     }
-    this.preview = '/' + this.stakeholder.alias + '/' + this.stakeholder.topics[this.topicIndex].alias +
-      '/' + this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].alias +
-      '/' + this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex].alias;
+    this.preview = '/' + this.stakeholder.alias + '/' + this.stakeholder.topics[this.topicIndex].alias;
+    if(this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex]) {
+      this.preview += '/' + this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].alias;
+      if(this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex]) {
+        this.preview += '/' + this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex].alias;
+      }
+    }
   }
   
   initReorder() {