update

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

@@ -293,7 +293,7 @@ public class MusicGroupPaymentCalenderDetailServiceImpl extends BaseServiceImpl<
 		for(MusicGroupPaymentCalenderCourseSettings courseSettings : courseSettingsList){
 			//剔除可选课程
 			if (courseSettings.getIsStudentOptional() == false) {
-				totalPrice.add(courseSettings.getCourseCurrentPrice());
+				totalPrice = totalPrice.add(courseSettings.getCourseCurrentPrice());
 			}
 		}