feat:线下课考勤调整

mec-biz/src/main/java/com/ym/mec/biz/service/impl/TeacherAttendanceServiceImpl.java

@@ -538,7 +538,7 @@ public class TeacherAttendanceServiceImpl extends BaseServiceImpl<Long, TeacherA
 		TeacherAttendance teacherAttendanceInfo = teacherAttendanceDao.findByTeacherAttendanceInfo(userId.longValue(), courseScheduleId.longValue());
 		teacherSignDetail.setTeacherAttendanceInfo(teacherAttendanceInfo);
 		CourseHomework courseHomewok = courseHomeworkDao.findByCourseSchedule(courseScheduleId.longValue());
-		if(Objects.nonNull(teacherAttendanceInfo)){
+		if(Objects.nonNull(teacherAttendanceInfo)&&Objects.nonNull(courseHomewok)){
 			courseHomewok.setAttachments(teacherAttendanceInfo.getSignOutAttachments());
 		}
 		teacherSignDetail.setCourseHomeworkInfo(courseHomewok);