title: laravel 5.4: sending email from localhost not working
body: <p>I want to sent emails from my localhost with laravel 5.4. It is showing me the following error:
  <a href="https://i.stack.imgur.com/08R2l.jpg" rel="noreferrer">screenshot of the error</a></p>
  
  <p>This is my .env file</p>
  
  <pre><code>MAIL_DRIVER=smtp
  MAIL_HOST=smtp.gmail.com
  MAIL_PORT=587
  MAIL_USERNAME=myemail@gmail.com
  MAIL_PASSWORD=mypassword
  MAIL_ENCRYPTION=tfl
  </code></pre>
  
  <p>This is my mail.php file</p>
  
  <pre><code>&lt;?php
  
  return [
  
      /*
      |--------------------------------------------------------------------------
      | Mail Driver
      |--------------------------------------------------------------------------
      |
      | Laravel supports both SMTP and PHP's "mail" function as drivers for the
      | sending of e-mail. You may specify which one you're using throughout
      | your application here. By default, Laravel is setup for SMTP mail.
      |
      | Supported: "smtp", "sendmail", "mailgun", "mandrill", "ses",
      |            "sparkpost", "log", "array"
      |
      */
  
      'driver' =&gt; env('MAIL_DRIVER', 'mail'),
  
      /*
      |--------------------------------------------------------------------------
      | SMTP Host Address
      |--------------------------------------------------------------------------
      |
      | Here you may provide the host address of the SMTP server used by your
      | applications. A default option is provided that is compatible with
      | the Mailgun mail service which will provide reliable deliveries.
      |
      */
  
      'host' =&gt; env('MAIL_HOST', 'smtp.gmail.com'),
  
      /*
      |--------------------------------------------------------------------------
      | SMTP Host Port
      |--------------------------------------------------------------------------
      |
      | This is the SMTP port used by your application to deliver e-mails to
      | users of the application. Like the host we have set this value to
      | stay compatible with the Mailgun e-mail application by default.
      |
      */
  
      'port' =&gt; env('MAIL_PORT', 587),
  
      /*
      |--------------------------------------------------------------------------
      | Global "From" Address
      |--------------------------------------------------------------------------
      |
      | You may wish for all e-mails sent by your application to be sent from
      | the same address. Here, you may specify a name and address that is
      | used globally for all e-mails that are sent by your application.
      |
      */
  
      'from' =&gt; [
          'address' =&gt; env('MAIL_FROM_ADDRESS', 'myemail@gmail.com'),
          'name' =&gt; env('MAIL_FROM_NAME', 'Example'),
      ],
  
      /*
      |--------------------------------------------------------------------------
      | E-Mail Encryption Protocol
      |--------------------------------------------------------------------------
      |
      | Here you may specify the encryption protocol that should be used when
      | the application send e-mail messages. A sensible default using the
      | transport layer security protocol should provide great security.
      |
      */
  
      'encryption' =&gt; env('MAIL_ENCRYPTION', 'tls'),
  
      /*
      |--------------------------------------------------------------------------
      | SMTP Server Username
      |--------------------------------------------------------------------------
      |
      | If your SMTP server requires a username for authentication, you should
      | set it here. This will get used to authenticate with your server on
      | connection. You may also set the "password" value below this one.
      |
      */
  
      'username' =&gt; env('MAIL_USERNAME'),
  
      'password' =&gt; env('MAIL_PASSWORD'),
  
      /*
      |--------------------------------------------------------------------------
      | Sendmail System Path
      |--------------------------------------------------------------------------
      |
      | When using the "sendmail" driver to send e-mails, we will need to know
      | the path to where Sendmail lives on this server. A default path has
      | been provided here, which will work well on most of your systems.
      |
      */
  
      'sendmail' =&gt; '/usr/sbin/sendmail -bs',
  
      /*
      |--------------------------------------------------------------------------
      | Markdown Mail Settings
      |--------------------------------------------------------------------------
      |
      | If you are using Markdown based email rendering, you may configure your
      | theme and component paths here, allowing you to customize the design
      | of the emails. Or, you may simply stick with the Laravel defaults!
      |
      */
  
      'markdown' =&gt; [
          'theme' =&gt; 'default',
  
          'paths' =&gt; [
              resource_path('views/vendor/mail'),
          ],
      ],
  
  ];
  </code></pre>
  
  <p>This is my mail class in App\mail\ directory</p>
  
  <pre><code>&lt;?php
  
  namespace App\Mail;
  
  use Illuminate\Bus\Queueable;
  use Illuminate\Mail\Mailable;
  use Illuminate\Queue\SerializesModels;
  use Illuminate\Contracts\Queue\ShouldQueue;
  
  class CompanyVerificationEmails extends Mailable
  {
      use Queueable, SerializesModels;
  
      /**
       * Create a new message instance.
       *
       * @return void
       */
      public function __construct()
      {
          //
      }
  
      /**
       * Build the message.
       *
       * @return $this
       */
      public function build()
      {
          return $this-&gt;view('emails.comp_ver_emails');
      }
  }
  </code></pre>
  
  <p>This is my controller</p>
  
  <pre><code>&lt;?php
  
  namespace App\Http\Controllers;
  
  use App\General_model;
  
  use App\Http\Requests;
  
  use Session;
  
  use Mail;
  use App\Mail\CompanyVerificationEmails;
  
  use Illuminate\Http\Request;
  
  use App\Http\Controllers\Controller;
  
  use Illuminate\Foundation\Validation\ValidatesRequests;
  
  use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
  
  use Illuminate\Foundation\Auth\Access\AuthorizesResources;
  
  
  class General_controller extends Controller
  {
  
  public function sentemail()
  {
       $mail_to = 'receiver_email@gmail.com';
  
       Mail::to($mail_to)-&gt;send(new CompanyVerificationEmails);
  
       dd('Mail send successfully');
  }
  
  }
  </code></pre>