update

src/modules/course/my/views/View.vue

@@ -25,7 +25,7 @@ onMounted(() => {
   <div class="course-view">
     <div class="course-left_info">
       <ViewCourseInfo :data="courseDetails"></ViewCourseInfo>
-      <ViewCourseChapter v-if="Object.keys(courseDetails).length" :data="courseDetails.chapters[0].children"></ViewCourseChapter>
+      <ViewCourseChapter v-if="Object.keys(courseDetails).length" :data="courseDetails.chapters[0]?.children || []"></ViewCourseChapter>
     </div>
   </div>
 </AppCard>