Merged in feature/navigation-missing-import (pull request #423)

Add missing import

Approved-by: Elia Bieri

client/src/components/header/HeaderBar.vue

@@ -1,5 +1,6 @@
 <script setup lang="ts">
 import { useCourseSessionsStore } from "@/stores/courseSessions";
+import CoursePreviewBar from "./CoursePreviewBar.vue";
 import MainNavigationBar from "./MainNavigationBar.vue";
 
 const courseSessionsStore = useCourseSessionsStore();