Erro

rc\Buscador.php:30 PhanUndeclaredClassMethod Call to method getBody from undeclared class \Psr\Http\Message\ResponseInterface (Did you mean to configure a stub with https://github.com/phan/phan/wiki/How-To-Use-Stubs#internal-stubs or to enable the extension providing the class.) src\Buscador.php:34 PhanPossiblyUndeclaredVariable Variable $html is possibly undeclared

    public function buscar(string $url): array
    {
        $resposta = $this->httpClient->request('GET', $url);

        $html = $resposta->getBody();
        $this->crawler->addHtmlContent($html);

        $elementosCursos = $this->crawler->filter('span.card-curso__nome');
        $cursos = [];

        foreach ($elementosCursos as $elemento) {
            $cursos[] = $elemento->textContent;
        }
        return $cursos;
    }