Http客户端发送 Multipart 表单请求 post请求问题

GuzzleHttp\Exception\InvalidArgumentException: You cannot use form_params and multipart at the same time. Use the form_params option if you want to send application/x-www-form-urlencoded requests, and the multipart option to send multipart/form-data requests

//https://github.com/yzh52521/easyhttp/blob/master/src/Request.php
/**
* Request constructor.
*/
public function __construct()
{
$this->client = $this->getInstance();

$this->bodyFormat = 'form_params'; // 注意这里的初始化
$this->options    = [
'http_errors' => false,
];
if (!$this->handlerStack instanceof HandlerStack) {
$this->handlerStack = HandlerStack::create( new CurlHandler() );
}
$this->options['handler'] = $this->handlerStack;
}

public function post(string $url,array $data = [])
{
    $this->options[$this->bodyFormat] = $data; // 这里

    return $this->request( 'POST',$url,$data );
}