php微博oauth2.0登录授权调用API接口报错

1,问题: 已经获得access_token，在使用access_token请求(发送一条微博)API接口时，报错

2,代码信息

/*发送一条微博*/
public function pushWeiboOnce($access_token,$status,$visible = 0,$list_id = "",$lat = "",$long = "",$annotations = "",$rip = "")
    {
        $data = array(
            'access_token'=>$access_token,
            'status'=>$status
        );
        $headers = array();
        $headers[] = "Content-Type:application/x-www-form-urlencoded";
        $url = "https://api.weibo.com/2/statuses/update.json";
        $result = $this->_requestPost($url,$data,true,$headers);
        $err = json_decode($result,true);
        return $err;
    }
    
/*_requestPost*/
private function _requestPost($url,$data = array(),$ssl = true,$headers = array())
    {
      $timeout = 60; 
      $ch = curl_init($url);
      curl_setopt($ch,CURLOPT_SAFE_UPLOAD, false);
      curl_setopt($ch, CURLOPT_HEADER,0);
      curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
      curl_setopt($ch, CURLOPT_POST, 1);
      curl_setopt($ch, CURLOPT_CONNECTTIMEOUT,$timeout);
      curl_setopt($ch, CURLOPT_POSTFIELDS,$data);    
      curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);  
      curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);  
      curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
      if(!empty($headers)){
          curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
      }
      //检查服务器SSL证书中是否存在一个公用名
      curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,2);
      if($ssl){
            //发送ssl请求配置
            //禁用后，将禁止从服务器验证
            curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
            //检查服务器SSL证书中是否存在一个公用名
            curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,2);
      }
      $result = curl_exec($ch);
      curl_close($ch);
      return $result;
    }

/*调用*/
token确保已经获取
$content = "我是微博机器人=.=,来自勇哥的接口测试程序";
$result = $oauthWeibo->pushWeiboOnce($token,$content);
print_r($result);

3,报错信息:
[error] => auth by Null spi! [error_code] => 21301 [request] => /2/statuses/update.json

4，相关信息，应用未提交审核，但是使用了测试账号也报错，回调地址也是正确的
文档地址:http://open.weibo.com/wiki/2/...