logger 추가

vendor/composer/autoload_psr4.php

@@ -6,8 +6,10 @@ $vendorDir = dirname(dirname(__FILE__));
 $baseDir = dirname($vendorDir);
 
 return array(
+    'Psr\\Log\\' => array($vendorDir . '/psr/log/Psr/Log'),
     'Psr\\Http\\Message\\' => array($vendorDir . '/psr/http-message/src'),
     'PHPMailer\\PHPMailer\\' => array($vendorDir . '/phpmailer/phpmailer/src'),
+    'Monolog\\' => array($vendorDir . '/monolog/monolog/src/Monolog'),
     'League\\Plates\\' => array($vendorDir . '/league/plates/src'),
     'Leafo\\ScssPhp\\' => array($vendorDir . '/leafo/scssphp/src'),
     'GuzzleHttp\\Psr7\\' => array($vendorDir . '/guzzlehttp/psr7/src'),