Login and Register works locally, but doesn't work after it deployed to the web

Login and Register is nothing to do with Mail

That's not quite correct. There is a password reminder logic, that engages Mail.

the ForgotPasswordController handles e-mailing links for resetting passwords https://laravel.com/docs/5.6/authentication#authentication-quickstart

So you just need to provide correct mail credentials. Or set your mail driver to log.

I am new to laravel, that is my first project learning Laravel. I'll try changing MAIL_DRIVER=log in .env and let you know if that works. Cheers!

It didn't work, Could it be possible that my app is not communicating with sql databse?

Run this command and try again:

php artisan config:cache

Check to make sure you mail settings are correct i.e. correct port number, host, user, pass etc.

Hi all, I think I have fixed the problem by updating the mail settings, but now I'm getting an error regarding database access, I not sure where I have to give permissions. Here is the error:-

""[2018-05-13 05:52:25] production.ERROR: SQLSTATE[HY000] [1698] Access denied for user 'root'@'localhost' {"exception":"[object] (PDOException(code: 1698): SQLSTATE[HY000] [1698] Access denied for user 'root'@'localhost' at /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php:68) [stacktrace] #0 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(68): PDO->__construct('mysql:host=loca...', 'root', 'root', Array) #1 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(44): Illuminate\Database\Connectors\Connector->createPdoConnection('mysql:host=loca...', 'root', 'root', Array) #2 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(24): Illuminate\Database\Connectors\Connector->createConnection('mysql:host=loca...', Array, Array) #3 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(183): Illuminate\Database\Connectors\MySqlConnector->connect(Array) #4 [internal function]: Illuminate\Database\Connectors\ConnectionFactory->Illuminate\Database\Connectors\{closure}() #5 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connection.php(915): call_user_func(Object(Closure)) #6 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connection.php(399): Illuminate\Database\Connection->getPdo() #7 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connection.php(325): Illuminate\Database\Connection->getPdoForSelect(false) #8 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connection.php(657): Illuminate\Database\Connection->Illuminate\Database\{closure}('select count()...', Array) #9 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connection.php(624): Illuminate\Database\Connection->runQueryCallback('select count()...', Array, Object(Closure)) #10 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Connection.php(333): Illuminate\Database\Connection->run('select count()...', Array, Object(Closure)) #11 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(1909): Illuminate\Database\Connection->select('select count()...', Array, false) #12 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(1894): Illuminate\Database\Query\Builder->runSelect() #13 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(2241): Illuminate\Database\Query\Builder->get(Array) #14 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Database/Query/Builder.php(2169): Illuminate\Database\Query\Builder->aggregate('count', Array) #15 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Validation/DatabasePresenceVerifier.php(55): Illuminate\Database\Query\Builder->count() #16 /var/www/laravel/vendor/laravel/framework/src/Illuminate/Validation/Concerns/ValidatesAttributes.php(687):""