test this

app/Notifications/ApplicationApproved.php

@@ -40,14 +40,11 @@ public function via($notifiable)
      */
     public function toMail($notifiable)
     {
-        $legalization_number = $this->account->legalization_number;
-
         return (new MailMessage)
                     ->to($notifiable->email)
                     ->from(config('settings.smtp_username'), env('MAIL_FROM_NAME', 'Birzha legalizasia'))
                     ->greeting('Hello!')
                     ->line('Your application has been approved!')
-                    ->line('Your application\'s legalization number is: ' . $legalization_number)
                     ->line('Thank you for using our application!');
     }