Laravel 上传文件报找不到临时文件的问题

最近在尝试用lavarel做上传文件，但遇到了奇怪的问题，下面是代码：

if(Input::hasFile("audio"))
{
	$file = Input::file("audio");


	$fileName = $this->guid();//
	$extensionName = $file->guessExtension();
	$fullFileName = $fileName . "." . $file->guessExtension();
	Log::info("full file name: " . $fullFileName);
	$path = $this->GetFileFolder();

	$audioSuccess = Input::file("audio")->move($path, $fullFileName);
	
	$audioFile = new FileInfo();
	$audioFile->Id = $this->guid();
	$audioFile->FileName = $fileName;
	$audioFile->FilePath = $path;
	$audioFile->ExtensionName = $file->guessExtension();
	$audioFile->save();
	
}if(Inp