In Package v.4.3.2, the MemCache construct has an error:

Uncaught Exception: Please added servers in /home/sistemas/relatorio/vendor/koolreport/cache/MemCache.php:29

$ttl = Utility::get($settings,"ttl",5*60);
       $servers = Utility::get($servers,"servers"); // <---- calls $server instead $settings
        if($servers==null)
        {
            throw new \Exception("Please added servers");
        }

He calls $server instead $settings. When I change tihs line to use $settings, everything work correctly.

And I get a notice in same file, line 35: PHP Notice: Undefined variable: port in /home/sistemas/relatorio/vendor/koolreport/cache/MemCache.php on line 35

foreach($servers as $host=>$port)
        {
            $this->_memCache->addServer($host,$post); // <-- The correctly is $port
        }