取消链接（\ public \ images / backend_images / category_images /）：权限被拒绝

Question

我正在尝试从数据库中删除图像，但是显示以下错误：

unlink(\public\images/backend_images/category_images/): Permission denied

有人可以告诉我我的代码哪里有错误吗？

public function destroy(Category $category)
{
    $image = $category->image;

    $image = public_path("images/backend_images/category_images/$image");
    if (file_exists($image)) unlink($image);


    $category->delete();

    return redirect(route('admin.category.index'))->with('flash_message_error', 'Category has been Deleted successfully');
}