Warning: Uncaught Magento\Framework\Exception\SessionException: Unable to connect to Redis in /var/www/html/vendor/magento/framework/Session/SaveHandler/Redis.php:65
Stack trace:
#0 /var/www/html/vendor/magento/framework/Session/SaveHandler/Redis.php(81): Magento\Framework\Session\SaveHandler\Redis->getConnection()
#1 /var/www/html/vendor/magento/framework/Session/SaveHandler.php(59): Magento\Framework\Session\SaveHandler\Redis->open('/var/www/html/v...', 'PHPSESSID')
#2 [internal function]: Magento\Framework\Session\SaveHandler->open('/var/www/html/v...', 'PHPSESSID')
#3 /var/www/html/vendor/magento/framework/Session/SessionManager.php(207): session_start()
#4 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\Session\SessionManager->start()
#5 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\Session\Generic\Interceptor->___callParent('start', Array)
#6 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\F in /var/www/html/vendor/magento/framework/Session/SaveHandler/Redis.php on line 65
Fatal error: session_start(): Failed to initialize storage module: user (path: /var/www/html/var/session/) in /var/www/html/vendor/magento/framework/Session/SessionManager.php on line 207