PHP 初心者が WordPress の プラグイン 作成 ！ part23 ( ヘッドレスブラウザでココナラのログインに挑戦 その2)

$evaluation = $page->evaluate('document.querySelector("li.c-mainNavBeforeLogin_item-pc a:first-child").click()')->waitForPageReload();
$evaluation = $page->evaluate('document.querySelector("form#UserLoginForm button[type=\"submit\"]").click()')->waitForPageReload();

    /**
     * If the script requested a page reload this method will help to wait for the page to be fully reloaded
     */
    public function waitForPageReload($eventName = Page::LOAD, $timeout = 30000)
    {
        $this->page->waitForReload($eventName, $timeout, $this->pageLoaderId);
    }

$evaluation = $page->evaluate('document.querySelector("li.c-mainNavBeforeLogin_item-pc a:first-child").click()')->waitForPageReload(Page::DOM_CONTENT_LOADED, 60000);
$evaluation = $page->evaluate('document.querySelector("form#UserLoginForm button[type=\"submit\"]").click()')->waitForPageReload(Page::DOM_CONTENT_LOADED, 60000);

Uncaught Error: Class "Page" not found in /var/www/html/index.php:37

use HeadlessChromium\Page;

Uncaught HeadlessChromium\Exception\OperationTimedOut: Operation timed out (60sec) in /var/www/html/vendor/chrome-php/chrome/src/Utils.php:69
Stack trace:
#0 /var/www/html/vendor/chrome-php/chrome/src/Page.php(349): HeadlessChromium\Utils::tryWithTimeout(60000000, Object(Generator))
#1 /var/www/html/vendor/chrome-php/chrome/src/PageUtils/PageEvaluation.php(64): HeadlessChromium\Page->waitForReload('DOMContentLoade...', 60000, 'C6B2B1DCF425419...')
#2 /var/www/html/index.php(45): HeadlessChromium\PageUtils\PageEvaluation->waitForPageReload('DOMContentLoade...', 60000)
#3 {main}