fix:声部更换根据所在乐团生成协议

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

@@ -456,7 +456,7 @@ public class SubjectChangeServiceImpl extends BaseServiceImpl<Integer, SubjectCh
 
         if (studentPaymentOrder.getStatus() == DealStatusEnum.SUCCESS) {
             try {
-                contractService.transferProduceContract(userId, null);
+                contractService.transferProduceContract(userId, subjectChange.getMusicGroupId());
             } catch (Exception e) {
                 logger.error("产品协议生成失败", e);
             }