Merge pull request #5369 from FinnStutzenstein/fixProjectorSubtitle

Fix projector subtitles for items without agenda items

client/src/app/site/base/base-view-model-with-agenda-item.ts

@@ -67,7 +67,7 @@ export abstract class BaseViewModelWithAgendaItem<
      * Appends the agneda item comment as the subtitle, if this model has an agenda item
      */
     public getProjectorTitle(): ProjectorTitle {
-        const subtitle = this.item.comment || null;
+        const subtitle = this.item ? this.item.comment : null;
         return { title: this.getTitle(), subtitle };
     }