diff --git a/ui/src/app/metadata/configuration/component/property/array-property.component.html b/ui/src/app/metadata/configuration/component/property/array-property.component.html
index baff50a8a..e16eb8e65 100644
--- a/ui/src/app/metadata/configuration/component/property/array-property.component.html
+++ b/ui/src/app/metadata/configuration/component/property/array-property.component.html
@@ -7,7 +7,7 @@
                     <span [translate]="property.items.properties[prop].title">{{ property.items.properties[prop].title }}</span>
                 </div>
                 <ng-container *ngFor="let version of property.value">
-                    <div *ngIf="version[i]"
+                    <div *ngIf="version && version[i]"
                         [ngbPopover]="version[i][prop]"
                         triggers="mouseenter:mouseleave"
                         container="body"
@@ -16,7 +16,7 @@
                         popoverClass="popover-lg popover-info">
                         {{ version[i][prop] }}
                     </div>
-                    <div *ngIf="!version[i]" [ngStyle]="{'width': width}">
+                    <div *ngIf="!version || !version[i]" [ngStyle]="{'width': width}">
                         -
                     </div>
                 </ng-container>