Error Asentio System

mysqli::mysqli(): (HY000/1040): Too many connections

/home/norbert/domains/piaseczno.edu.pl/public_html/system/lib/db/class.mysql.php [23]

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    function __construct($config) {
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        $this->ext $config['ext'];
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        if(!$this->mysqli = new mysqli($config['host'],$config['user'],$config['pass'])) {
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            throw new AsentioException('Can\'t connect to database - '.$this->mysqli->error$this->mysqli->errno);
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        }
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        if(!$this->mysqli->select_db($config['name'])) {
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            throw new AsentioException('Can\'t select database - '.$this->mysqli->error$this->mysqli->errno);