# Walkthrough - Fixed Registration OTP Issue

I have fixed the issue where the OTP (token) screen was not showing after registration in the Docker environment.

## Changes Made

### Configuration Improvements
- **[config/mail.php](file:///media/itc43/Data/OTHER_PROJECT/kulakpos/kulakpos_15Maret2026_to%20GTEA/public_html/config/mail.php)**: Added `queue_mail` and `otp_visibility_time` to the configuration file. This allows these settings to be accessed reliably via the `config()` helper.

### Controller Refactoring
- **[RegisteredUserController.php](file:///media/itc43/Data/OTHER_PROJECT/kulakpos/kulakpos_15Maret2026_to%20GTEA/public_html/app/Http/Controllers/Auth/RegisteredUserController.php)**: Replaced direct `env()` calls with `config()` calls.
    - `env('MAIL_USERNAME')` is now `config('mail.mailers.smtp.username')`.
    - `env('QUEUE_MAIL')` is now `config('mail.queue_mail')`.
    - `env('OTP_VISIBILITY_TIME')` is now `config('mail.otp_visibility_time')`.

## Rationale
In Laravel, the `env()` function should only be used in configuration files. If the configuration is cached (which is common in production or Docker deployments), `env()` calls in controllers will return `null`. This was causing the registration process to think that the mail service was not configured, leading to a `406 Not Acceptable` error instead of showing the OTP modal.

## How to Verify
1. Clear the configuration cache in your Docker container:
   ```bash
   php artisan config:clear
   ```
2. Test the registration flow again. The OTP screen should now appear as expected.