PHP致命错误:未捕获错误:在C:\xampp\htdocs\server\pdf中找不到类“Mpdf\Mpdf”。菲律宾:5

PHP致命错误:未捕获错误:在C:\xampp\htdocs\server\pdf中找不到类“Mpdf\Mpdf”。菲律宾:5 堆栈跟踪: #0{main} 在C:\xampp\htdocs\server\pdf中抛出。php在线5

PHP 8.1.3,PHP Intelephense v1。8.2

康珀。json

{
"require": {
    "mpdf/mpdf": "^6.1"
      }
}

创作者锁

{
    "name": "mpdf/mpdf",
    "version": "v6.1.2",
    "source": {
    "type": "git",
    "url": "https://github.com/mpdf/mpdf.git",
    "reference": "da078bc2669d3f98553ac41f920ead4c17c951ad"
        },

pdf。php

<?php

require_once __DIR__ . '/pdf/autoload.php';

$mpdf = new \Mpdf\Mpdf;
$mpdf->WriteHTML('<h1>Hello world!</h1>');
$mpdf->Output();

我做错了什么?我不明白什么?

谢谢你的帮助!