minor changes

src/app/app.component.ts

@@ -118,7 +118,7 @@ export class AppComponent extends BaseComponent implements OnInit {
         if (cfg?.maintenance?.active) {
           this.cs.dialog.showWarningDialog({
             title: 'Site Under Maintenance',
-            content: `FIS is currently under maintenance.<br/>This maintenance is expected to continue until ${config?.maintenance?.endDatetime}.<br/>Sorry for any inconvenience caused.`,
+            content: `FIS is currently under maintenance.<br/>This maintenance is expected to continue until ${cfg?.maintenance?.endDatetime}.<br/>Sorry for any inconvenience caused.`,
             disableClose: true,
             hideCloseButton: true
           });