更改日志输出info为error

mooctest-site-server/src/main/java/cn/iselab/mooctest/site/service/impl/UserRPCServiceImpl.java

@@ -215,7 +215,7 @@ public class UserRPCServiceImpl implements UserService {
         for (Long userId : userIds) {
             UserDTO userDTO = userService.getUserById(userId);
             if (userDTO == null) {
-                LOG.info("UserId:"+userId+"is in groupId:" +groupId+"but not in user table");
+                LOG.error("UserId:"+userId+"is in groupId:" +groupId+"but not in user table");
                 continue;
             }
             if (keyword.isEmpty() || keyword.equals("")) {