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    private float $took = 0.0;
    protected ?string $error = null;

    private static ?mysqli $conn = null;

    final public function onRun(): void
    {
        $start = microtime(true);
        $mysqli = self::$conn;
        if ($mysqli === null || !$mysqli->ping()) {
            self::$conn = $mysqli = MySQL::connect();
        }
        try {
            $this->exec($mysqli);
            if ($mysqli->error) {
                $this->error = $mysqli->error;
            }
        } catch (Throwable $exception) {
            $this->error = $exception->getMessage();
        }

#0 /home/anmine/servers/s1/plugins/GoBase.phar/src/corndan/GoBase/MySQLTask(22): mysqli->ping()
#1 pmsrc/src/scheduler/AsyncTask(83): corndan\GoBase\MySQLTask->onRun()
#2 (): pocketmine\scheduler\AsyncTask->run()