Iniciar sesión o registrarse en la pagina de luma no lo hace, solo recarga y me envia de nuevo al mismo sitio, borre cache y aun no funciona. De tanto iniciar sesion me crea un CAPTCHA y cuando trato de loguearme de nuevo me da error en el CAPTCHA...
Aca adjunto el Exception.log
[2018-07-18 19:45:29] main.CRITICAL: Warning: array_key_exists(): The first argument should be either a string or an integer in C:\xampp\htdocs\magento2\vendor\magento\framework\ObjectManager\Factory\AbstractFactory.php on line 215 {"exception":"[object] (Exception(code: 0): Warning: array_key_exists(): The first argument should be either a string or an integer in C:\\xampp\\htdocs\\magento2\\vendor\\magento\\framework\\ObjectManager\\Factory\\AbstractFactory.php on line 215 at C:\\xampp\\htdocs\\magento2\\vendor\\magento\\framework\\App\\ErrorHandler.php:61)"} []
[2018-07-19 13:34:41] main.CRITICAL: Unable to serialize value. {"exception":"[object] (InvalidArgumentException(code: 0): Unable to serialize value. at C:\\xampp\\htdocs\\magento2\\vendor\\magento\\framework\\Serialize\\Serializer\\Json.php:26)"} []
[2018-07-19 13:34:50] main.CRITICAL: Unable to serialize value. {"exception":"[object] (InvalidArgumentException(code: 0): Unable to serialize value. at C:\\xampp\\htdocs\\magento2\\vendor\\magento\\framework\\Serialize\\Serializer\\Json.php:26)"} []
[2018-07-19 13:34:58] main.CRITICAL: Unable to serialize value. {"exception":"[object] (InvalidArgumentException(code: 0): Unable to serialize value. at C:\\xampp\\htdocs\\magento2\\vendor\\magento\\framework\\Serialize\\Serializer\\Json.php:26)"} []
[2018-07-19 13:42:42] main.CRITICAL: Unable to send mail. mail(): Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() {"exception":"[object] (Magento\\Framework\\Exception\\MailException(code: 0): Unable to send mail. mail(): Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() at C:\\xampp\\htdocs\\magento2\\vendor\\magento\\module-email\\Model\\Transport.php:104, Zend_Mail_Transport_Exception(code: 0): Unable to send mail. mail(): Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() at C:\\xampp\\htdocs\\magento2\\vendor\\magento\\zendframework1\\library\\Zend\\Mail\\Transport\\Sendmail.php:111)"} []