bug修改

mec-application/src/main/java/com/ym/mec/teacher/controller/TeacherCourseScheduleController.java

@@ -137,7 +137,7 @@ public class TeacherCourseScheduleController extends BaseController {
     @PostMapping("/getRecentCourseSchedule")
     public HttpResponseResult<CourseScheduleDto> getRecentCourseSchedule(Long courseId){
         CourseScheduleDto courseScheduleDto = scheduleService.getRecentCourseSchedule(sysUserService.getUserId(), courseId);
-        if(courseScheduleDto.getTeachMode() == TeachModeEnum.OFFLINE && courseScheduleDto.getStatus() != CourseStatusEnum.UNDERWAY
+        if(courseScheduleDto != null && courseScheduleDto.getTeachMode() == TeachModeEnum.OFFLINE && courseScheduleDto.getStatus() != CourseStatusEnum.UNDERWAY
                 && StringUtils.isNotEmpty(courseScheduleDto.getCoursewareDetailId())){
             //获取课件详情列表
             R<CbsLessonCoursewareDetailWrapper.LessonCoursewareDetail> voR = coursewareFeignService.lessonCoursewareDetailDetail(Long.parseLong(courseScheduleDto.getCoursewareDetailId()));