Php Yii2:无法打开流：没有此类文件或目录

我在Yii2框架中的上载/更新功能有问题

我的更新功能：

    public function actionUpdate($id) {
    $model = $this->findModel($id);
    //        $model->scenario = 'update';

    if ($model->load(Yii::$app->request->post()) && $model->save()) {
        $uploadDir = Yii::getAlias('@web/web/uploads') . Yii::getAlias('@web/web/uploads');
        $uploadPath = Yii::getAlias('@web/web/uploads');

        $model->save();
        $imageProject = $model->id;

        //Main Image
        $image = UploadedFile::getInstance($model, 'main_image');

        if ($image) {
            $imgProject = 'project_' . $imageProject . '.' . $image->getExtension();
            $image->saveAs($uploadDir . '/' . $imgProject);
            $model->main_image = $uploadPath . '/' . $imgProject;
        }

        if ($model->upload()) {
            $model->save();

            return $this->redirect(['view', 'id' => $model->id]);
        } else {
            return $this->render('update', [
                'model' => $model,
            ]);
        }
    } else {
        return $this->render('update', [
            'model' => $model,
        ]);
    }
}

和我的params.php文件：

return [
'aliases' => [
    '@projectImgPath' => '@webroot/web/uploads',
    '@projectImgUrl' => '@web/web/'
]

])

当我以我的表单上传文件时，出现以下错误：

move_uploaded_file(/web/uploads/web/uploads/gallery_1_3.png): failed to open stream: No such file or directory

任何人都可以帮助我。。。谢谢

 $uploadDir = Yii::getAlias('@web/web/uploads') . Yii::getAlias('@web/web/uploads');

取代

 $uploadDir = Yii::getAlias('@web/web/uploads');

---

路径问题或文件夹权限（077）问题。错误表示存在路径问题希望它能起作用，

返回['alias'=>['@projectmgpath'=>'@webroot/web/uploads'，'@projectmgurl'=>'@web/']]

与$uploadDir=Yii:：getAlias（'@web/uploads'）.Yii:：getAlias（'@web/uploads'）；$uploadPath=Yii:：getAlias（'@web/uploads'））；您好，先生！现在我的代码是：'@projectmgpath'=>'@webroot/web/uploads'，'@projectmgurl'=>'@web/“，---------------------------------------$uploadDir=Yii:：getAlias（'@web/uploads'）。Yii:：getAlias（'@web/uploads'）；$uploadPath=Yii:：getAlias（'@web/uploads'）；但同样不起作用…$uploadDir=Yii:：getAlias（'@webroot/）。Yii:：getAlias（“@web/uploads”）；$uploadPath=Yii:：getAlias（“@web/uploads”）；“@projectmgpath'=>”@webroot/web/uploads'，“@projectmgurl'=>”@web/”现在它可以工作了