在设置上传文件选项时遇到问题

试图为人们提供一个上传文件到此网站的地方。我试的时候出错了。让我知道你的想法。顺便说一句

=====HTML=====

 <div id="upload">
    <form enctype="multipart/form-data" action="<?=current_url()?>" method="POST">
        <input type="hidden" name="MAX_FILE_SIZE" value="100000" />
        Choose a file to upload: <input name="uploadedfile" type="file" />
        <br />
        <input type="submit" value="Upload" />
    </form>
    <p><?=$uploadResult?></p>
</div>

=====PHP=====

 if ($this->input->post()) {
        $target_path = "../../uploads/";
        $target_path = $target_path .basename($_FILES['uploadedfile']['name']);  
        if (move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
            $uploadResult =  "The file ".  basename( $_FILES['uploadedfile']['name']). " has been uploaded";
        } else {
            $uploadResult =  "There was an error uploading the file, please try again!";   /* <---- Error I get */
        }
    } else {
        $uploadResult = 'didnt work at all';
    }
    echo $uploadResult;
    $this->data['uploadResult'] = $uploadResult;

=====错误=====

遇到PHP错误严重性：警告消息：move_uploaded_file（../../uploads/notes_USH.odt）：无法打开流：没有这样的文件或目录文件名：controllers/discovery.php行号：158