failed, anon_id not in UUID v4 format");
            } else {
                $this->track('$identify', array(
                    '$identified_id' => $user_id,
                    '$anon_id'       => $anon_id
                ));
            }
        }
    }


    /**
     * An alias to be merged with the distinct_id. Each alias can only map to one distinct_id.
     * This is helpful when you want to associate a generated id (such as a session id) to a user id or username.
     *
     * Because aliasing can be extremely vulnerable to race conditions and ordering issues, we'll make a synchronous
     * call directly to Mixpanel when this method is called. If it fails we'll throw an Exception as subsequent
     * events are likely to be incorrectly tracked.
     * @param string|int $distinct_id
     * @param string|int $alias
     * @return array $msg
     * @throws Exception
     */
    public function createAlias($distinct_id, $alias) {
        $msg = array(
            "event"         => '$create_alias',
            "properties"    =>  array("distinct_id" => $distinct_id, "alias" => $alias, "token" => $this->_token)
        );

        // Save the current fork/async options
        $old_fork = isset($this->_options['fork']) ? $this->_options['fork'] : false;
        $old_async = isset($this->_options['async']) ? $this->_options['async'] : false;

        // Override fork/async to make the new consumer synchronous
        $this->_options['fork'] = false;
        $this->_options['async'] = false;

        // The name is ambiguous, but this creates a new consumer with current $this->_options
        $consumer = $this->_getConsumer();
        $success = $consumer->persist(array($msg));

        // Restore the original fork/async settings
        $this->_options['fork'] = $old_fork;
        $this->_options['async'] = $old_async;

        if (!$success) {
            error_log("Creating Mixpanel Alias (distinct id: $distinct_id, alias: $alias) failed");
            throw new Exception("Tried to create an alias but the call was not successful");
        } else {
            return $msg;
        }
    }


    /**
     * Returns the "events" endpoint
     * @return string
     */
    function _getEndpoint() {
        return $this->_options['events_endpoint'];
    }
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;WPMedia_Producers_MixpanelEvents&quot; not found in /home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/vendor/wp-media/wp-mixpanel/src/Classes/Mixpanel.php:144
Stack trace:
#0 /home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/vendor/wp-media/wp-mixpanel/src/Classes/Mixpanel.php(157): WPMedia_Mixpanel-&gt;__construct()
#1 /home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/vendor/wp-media/wp-mixpanel/src/Tracking.php(41): WPMedia_Mixpanel::getInstance()
#2 /home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/vendor/wp-media/wp-mixpanel/src/TrackingPlugin.php(44): WPMedia\Mixpanel\Tracking-&gt;__construct()
#3 /home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/includes/class-tracking.php(71): WPMedia\Mixpanel\TrackingPlugin-&gt;__construct()
#4 /home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/rank-math.php(300): RankMath\Tracking-&gt;__construct()
#5 /home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/rank-math.php(185): RankMath-&gt;instantiate()
#6 /home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/rank-math.php(164): RankMath-&gt;setup()
#7 /home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/rank-math.php(547): RankMath::get()
#8 /home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/rank-math.php(551): rank_math()
#9 /home/alibiuro/domains/alibiuro.pl/public_html/wp-settings.php(560): include_once('...')
#10 /home/alibiuro/domains/alibiuro.pl/public_html/wp-config.php(113): require_once('...')
#11 /home/alibiuro/domains/alibiuro.pl/public_html/wp-load.php(50): require_once('...')
#12 /home/alibiuro/domains/alibiuro.pl/public_html/wp-blog-header.php(13): require_once('...')
#13 /home/alibiuro/domains/alibiuro.pl/public_html/index.php(17): require('...')
#14 {main}
  thrown in <b>/home/alibiuro/domains/alibiuro.pl/public_html/wp-content/plugins/seo-by-rank-math/vendor/wp-media/wp-mixpanel/src/Classes/Mixpanel.php</b> on line <b>144</b><br />