Why does mediatopic.post method return error 100?

Question

PHP

Hello, I have the following problem. I'm trying to publish a post to a group using the mediatopic.post method, but it returns the following error:

array(3) { ["error_code"]=> int(100) ["error_msg"]=> string(56) "PARAM : Only one of session_key or uid must be specified" ["error_data"]=> NULL }

The GROUP_CONTENT rights on the application have been granted.
The function code is the following:

public function ok()
  {
    if (!OdnoklassnikiSDK::checkCurlSupport()) {
      print "У вас не установлен модуль curl, который требуется для работы с SDK одноклассников.  Инструкция по установке есть, например, <a href=\"http://www.php.net/manual/en/curl.installation.php\">здесь</a>.";
      return;
    }

    if (!is_null(OdnoklassnikiSDK::getCode())) {
      if (OdnoklassnikiSDK::changeCodeToToken(OdnoklassnikiSDK::getCode())) {
        $params = array(
          'uid' => '572863283691',
          'type' => 'GROUP_THEME',
          'gid' => '54201097322731',
          'attachment' => '{"media": [{"type": "text","text": "hello"}]}',
          'format' => 'json'
        );

        $testPost = OdnoklassnikiSDK::makeRequest("mediatopic.post", $params);

        var_dump($testPost);

      }
    }
  }

Tell me what the problem is, I'm already worn out with this API to fight.
Thanks in advance to all who respond.

Answer 1

The problem is solved as follows: removed the line 'uid' => '572863283691',
from the parameter array.

Answer 2

Not sure, but perhaps the answer is already here:
https://toster.ru/search?q=Only+one+of+session_key...