fix

src/main/java/cn/com/qmth/mps/service/impl/PaperServiceImpl.java

@@ -238,6 +238,9 @@ public class PaperServiceImpl extends ServiceImpl<PaperDao, PaperEntity> impleme
 						}
 						for (PaperVo vo : dataList) {
 							vo.setGroupCount(countMap.get(vo.getId()));
+							if(vo.getGroupCount()==null) {
+								vo.setGroupCount(0);
+							}
 						}
 					}
 				}