SI-588 leer Values problem fix Signed-off-by: Dimitrios Chalepakis <dimitrios.chalepakis@pta.de>

diff --git a/projects/grid-failure-information-app/src/app/shared/filters/ag-grid/set-filter/set-filter.component.html b/projects/grid-failure-information-app/src/app/shared/filters/ag-grid/set-filter/set-filter.component.html
index 6aea39f..1445ae2 100644
--- a/projects/grid-failure-information-app/src/app/shared/filters/ag-grid/set-filter/set-filter.component.html
+++ b/projects/grid-failure-information-app/src/app/shared/filters/ag-grid/set-filter/set-filter.component.html

@@ -24,7 +24,7 @@
   <div style="overflow-y: scroll; overflow: hidden; margin: 2px;">
     <label *ngFor="let setItem of setItems | keyvalue" title="{{ setItem?.key }}" style="display: block;">
       <input type="checkbox" [checked]="setItem.value.checked" (change)="notifyFilter($event)" [id]="setItem?.key" />
-      <span *ngIf="setItem.key != 'null'; else nullValue">{{ setItem?.key }}</span>
+      <span *ngIf="setItem.key != 'null' && setItem.key != ''; else nullValue">{{ setItem?.key }}</span>
       <ng-template #nullValue>
         <span>{{ 'GridFailures.NullValue' | translate }}</span>
       </ng-template>

diff --git a/projects/grid-failure-information-app/src/app/shared/filters/ag-grid/set-filter/set-filter.component.ts b/projects/grid-failure-information-app/src/app/shared/filters/ag-grid/set-filter/set-filter.component.ts
index 4c9fd96..468bb75 100644
--- a/projects/grid-failure-information-app/src/app/shared/filters/ag-grid/set-filter/set-filter.component.ts
+++ b/projects/grid-failure-information-app/src/app/shared/filters/ag-grid/set-filter/set-filter.component.ts

@@ -10,9 +10,9 @@
  *
  * SPDX-License-Identifier: EPL-2.0
  ********************************************************************************/
-import { Component, OnInit } from '@angular/core';
+import { Component } from '@angular/core';
 import { AgFilterComponent } from 'ag-grid-angular';
-import { IDoesFilterPassParams, IFilterParams, RowNode, RowDataChangedEvent } from 'ag-grid-community';
+import { IDoesFilterPassParams, IFilterParams, RowDataChangedEvent, RowNode } from 'ag-grid-community';
 
 @Component({
   selector: 'filter-cell',
@@ -25,7 +25,7 @@
   public setItems: any = {};
   public gridHeight: number;
   public filterText: string = '';
-  public selectAllChecked = true;
+  public selectAllChecked: boolean = true;
   private filtererdItems: any = {};
   filterCheckboxList(text: string) {
     text