ios sdk 9.0.2 AVFile保存bug

今天把sdk从8.2.3升级到了9.0.1，下面这段代码在8.2.3中正常，

AVObject *todo = [AVObject objectWithClassName:@"Todo"];
[todo setObject:[AVUser currentUser].username forKey:@"user"];
AVFile *file = [AVFile fileWithName:@"screen.png" data:data];
[todo setObject:file forKey:@"image"];
[todo saveInBackgroundWithBlock:^(BOOL succeeded, NSError * _Nullable error) {

}];

升级到了9.0.1，使用了新的方法
AVFile *file = [AVFile fileWithData:data name:@"screen.png"]];

执行到saveInBackgroundWithBlock就开始报错。

你好，我的帖子里已经使用了新的接口，依然会闪退
AVFile *file = [AVFile fileWithData:data name:@"screen.png"]];