我正在玩O365 iOS Microsoft Graph SDK . 我正在搜索一个驱动器'xxx'，当我使用nextRequest项目获取搜索结果的下一页时，我得到以下错误

2017-05-30 16：24：30.413 O365-iOS-Microsoft-Graph-SDK [36063：3959258]图形SDK错误：数据任务出错：错误Domain = com.microsoft.graph.errors Code = 400 "bad request" UserInfo = { error = invalidRequest：无效查询选项，NSLocalizedDescription =错误请求} 2017-05-30 16：24：30.414 O365-iOS-Microsoft-Graph-SDK [36063：3959258]图形SDK错误：由请求引起{URL：[https://graph.microsoft.com/v1.0/me/drive/items/root/microsoft.graph.search(q=](https://graph.microsoft.com/v1.0/me/drive/items/root/microsoft.graph.search(q=) '.xxx'） ？$ skiptoken = MjAx（q = null）}

这是代码

MSGraphDriveItemSearchRequest *itemSearchRequest = [[[[[self.graphClient me] drive] items:@"root"] searchWithQ:@".xxx"] request];
[itemSearchRequest executeWithCompletion:
 ^(MSCollection *response, MSGraphDriveItemSearchRequest *nextRequest, NSError *error) {
     if(!error) {
         [nextRequest executeWithCompletion:
         ^(MSCollection *response2, MSGraphDriveItemSearchRequest *nextRequest2, NSError *error2) {
             if(!error2) {

             }
         }];
     }
 }];

如果我使用图形浏览器并使用（https：//graph.microsoft.com/v1.0/me/drive/items/root/microsoft.graph.search(q='.xxx')?$skiptoken=MjAx）查询，我得到搜索结果的“下一页”，我想知道为什么它不使用我粘贴的代码 .

ios search microsoft-graph onedrive