生成的图片路径如：http://larabbs.test/uploads/images/avatars...
日期之后存在两个斜线

重复原因：

namespace App\Handlers;

class ImageUploadHandler
{
    .
    .
    public function save($file, $folder, $file_prefix, $max_width = false)
    {
        // 此处已经拼接 /
        $folder_name = "uploads/images/$folder/" . date("Ym", time()) . '/'.date("d", time()).'/';
        .
        .
        if ($max_width && $extension != 'gif') {
            // 此处重复拼接 /
            $this->reduseSize($upload_path . '/' . $filename, $max_width);
        }

        return [
            // 此处重复拼接 /
            'path' => config('app.url') . "/$folder_name/$filename"
        ];
    }
    .
    .
｝