Update courseConfiguration.tsx

src/views/teaching-manage/courseware-manage/components/courseConfiguration.tsx

@@ -309,6 +309,7 @@ export default defineComponent({
                   addForm.lessonTargetDesc = ''
                   addForm.lessonTrainingId = ''
                   addForm.id = ''
+                  addForm.level = null
                   addForm.lockEnable = ''
                   addForm.accessScope = 0
                   getLevels()