update

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

@@ -165,7 +165,7 @@ public class ImGroupMemberServiceImpl extends BaseServiceImpl<Long, ImGroupMembe
 
 		ImGroup imGroup = imGroupDao.getLocked(imGroupId);
 		if (imGroup == null) {
-			throw new BizException("退出群组失败：群组[{}]不存在", imGroupId);
+			return true;
 		}
 
 		List<ImGroupMember> imGroupMemberList = imGroupMemberDao.queryByImGroupIdAndUserId(imGroupId.toString(), userIdList.stream().map(Objects::toString)