Mail Not working in laravel console command within handle function - laravel

Question

I'm developing a new Laravel application. When I'm using mail to send messages via laravel schedule command, I'm getting the following error:
Swift_TransportException with message 'Process could not be started
[The system cannot find the path specified. ]
This is my Command file.
EmailReminder.php
<?php
namespace App\Console\Commands;
use App\ScheduleMeeting;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Mail;
use Modules\User\Emails\MentorEmailReminder;
class EmailReminder extends Command
{
/**
* The name and signature of the console command.
*
* #var string
*/
protected $signature = 'reminder:emails';
/**
* The console command description.
*
* #var string
*/
protected $description = 'Send email notification to user about reminders.';
/**
* Create a new command instance.
*
* #return void
*/
public function __construct()
{
parent::__construct();
}
/**
* Execute the console command.
*
* #return int
*/
public function handle()
{
$date = now()->tz('Asia/Singapore')->addDay(); // Current date is added one day
$newDate = $date->format('Y-m-d g:i A');
$tomorrow_meetings = ScheduleMeeting::where('start_time','=', $newDate)
->where('status',1)
->where('meeting_type',0)
->get();
$data = [];
foreach($tomorrow_meetings as $meeting){
$data[$meeting->mentor_id][] = $meeting->toArray();
}
foreach($data as $mentorId => $reminders){
$this->sendEmailToUser($mentorId, $reminders);
}
}
private function sendEmailToUser($mentorId, $reminders){
$user = \App\User::find($mentorId);
Mail::to($user)->send(new MentorEmailReminder($reminders));
}
}
This is my email file.
MentorEmailReminder.php
<?php
namespace Modules\User\Emails;
use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;
class MentorEmailReminder extends Mailable
{
use Queueable, SerializesModels;
public $reminders;
public function __construct($reminders)
{
$this->reminders = $reminders;
}
public function build()
{
$subject = 'Reminder: Mentoring Session with';
return $this->from(setting_item("email_from_address"), 'Uplyrn')->subject($subject)->view('User::emails.mentor-email-reminder')->with([
'reminders' => $this->reminders,
]);
}
}
This is .env file.
MAIL_DRIVER=sendmail
MAIL_HOST=smtp.mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=null
MAIL_PASSWORD=null
MAIL_ENCRYPTION=null