Fatal error: Uncaught Error: Class "Monolog\Handler\StreamHandler" not found in /var/www/html/vendor/magento/framework/Logger/Handler/Base.php:22 Stack trace: #0 /var/www/html/vendor/composer/ClassLoader.php(576): include() #1 /var/www/html/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}('/var/www/html/v...') #2 /var/www/html/vendor/magento/framework/Logger/Handler/Exception.php(11): Composer\Autoload\ClassLoader->loadClass('Magento\\Framewo...') #3 /var/www/html/vendor/composer/ClassLoader.php(576): include('/var/www/html/v...') #4 /var/www/html/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}('/var/www/html/v...') #5 /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(121): Composer\Autoload\ClassLoader->loadClass('Magento\\Framewo...') #6 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Framewo...', Array) #7 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...') #8 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Framewo...') #9 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...') #10 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(125): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Framewo...') #11 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(86): Magento\Framework\ObjectManager\Factory\Compiled->parseArray(Array) #12 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(73): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...') #13 /var/www/html/vendor/magento/framework/Logger/LoggerProxy.php(101): Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Framewo...') #14 /var/www/html/vendor/magento/framework/Logger/LoggerProxy.php(131): Magento\Framework\Logger\LoggerProxy->getLogger() #15 /var/www/html/vendor/magento/framework/App/Bootstrap.php(445): Magento\Framework\Logger\LoggerProxy->critical(Object(Error)) #16 /var/www/html/vendor/magento/framework/App/Bootstrap.php(275): Magento\Framework\App\Bootstrap->terminate(Object(Error)) #17 /var/www/html/pub/index.php(30): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #18 {main} thrown in /var/www/html/vendor/magento/framework/Logger/Handler/Base.php on line 22