嗨，我遇到了同样的错误。
我正在尝试从云端硬盘调用特定文件夹。
//retrieving files from Drive rootFolder<br>
Children.List request = service.children().list(root_ID);
//setquery to get file with title:Books <br>
request.setQ("title = 'Books'");
//executed the request to retrieve the file list<br>
ChildList children = request.execute();//occured error executing this line
ERROR:com.google.api.client.googleapis.json.GoogleJsonResponseException: 500 OK
编码语言：JAVA
操作系统：Windows 7
服务器：Apache Tomcat 7.0
我要求您提供有关如何解决此问题的信息。