Integration with opencart 3+ does not work

The developers of Opencart 3+ made a mistake in the API, because of this it does not work correctly.
To fix:
1) go to the file /catalog/controller/startup/session.php and look for the line
$this->db->query("DELETE FROM `" . DB_PREFIX . "api_session` WHERE TIMESTAMPADD(HOUR, 1, date_modified) < NOW()");
and before this line add:
if (!isset($this->request->get['api_token'])) { $this->request->get['api_token'] = ”; }
2. go to the catalog/model/account/api.php file and look for the line:
$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "api` WHERE `username` = '" . $this->db->escape($username) . "' `key` = '" . $this->db->escape($key) . "' AND status = '1'");
this line also has an omitted AND error. Below I have indicated the correct line, just replace it with:
$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "api` WHERE `username` = '" . $this->db->escape($username) . "' AND `key ` = '" . $this->db->escape($key) . "' AND status = '1'");
3. The last step and you can proceed. We go to the file /catalog/controller/api/login.php and look for the line there:
$session = new Session($config->get('session_engine'), $registry);
And here the developers are a bit confused. the correct syntax is:
$session = new Session($this->config->get('session_engine'), $this->registry);
That's all.