修复：开发测试问题修改

pages/course/index.vue

@@ -48,7 +48,7 @@
       <view
         class="fourBox"
         style="padding: 0; padding-bottom: 8rpx"
-        v-if="sbuMedicalTagsList && sbuMedicalTagsList.length > 0"
+        v-if="sbuMedicalTagsList?.length > 0"
       >
         <view
           class="childrenBox fourIcon flexbox"
@@ -257,6 +257,7 @@ const handleFirstLevelClick = (item: string) => {
  * 获取课程分类数据
  */
 const getMedicalTags = async () => {
+  sbuMedicalTagsList.value = []
   const res = await courseSubjectClassificationApi.getCourseMedicalTree()
   if (res && res.code === 0) {
     if (res.labels && res.labels.length > 0) {
@@ -268,8 +269,6 @@ const getMedicalTags = async () => {
           // 非终极分类，显示子分类
           if (selectedTag.children && selectedTag.children.length > 0) {
             sbuMedicalTagsList.value = selectedTag.children
-          } else {
-            sbuMedicalTagsList.value = []
           }
         }
       }