public static function createLog($cpa = null, $error = null)
    {
        $appDir = \Yii::getAlias('@app');
        $path = $appDir . '/logs';
        $filePath = $path .'/cpa_cron_log' . '.txt';
        if(!file_exists($path)){
            mkdir($path,0666);
        }
        $time = new \DateTime();
        $currentTime = $time->format('Y-m-d H:i:s');
        $log = PHP_EOL . $currentTime . PHP_EOL . $cpa . PHP_EOL . 'error_info: ' . $error . PHP_EOL;
        file_put_contents($filePath, $log, FILE_APPEND | LOCK_EX);
    }