Getting this error when I try to login for the first time

Support
1

Uncaught Error: Undefined constant PDO::MYSQL_ATTR_INIT_COMMAND in C:\inetpub\wwwroot\openemr\interface\modules\zend_modules\config\autoload\global.php:33

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@David_Beachboard if this error on your UI then please update your php.ini file and hide display error option from the file