Update index.tsx

src/teacher/piano-room/class-arrangement/create-class/index.tsx

@@ -173,7 +173,7 @@ export default defineComponent({
     // 排课
     const onCourseSchedule = async () => {
       const timeList = data.selectList
-      const n = classInfo.studentIds.length + 1
+      const n = classInfo.studentIds.length
       try {
         let { code, data } = await request.post(
           '/api-teacher/courseSchedule/arrangeCourse',