[Bug]: (PHP) Fix Newsletter Subscription Error Endpoint

[abdielbytes]

Description

An error message appears when users try to subscribe to the newsletter. This issue needs to be fixed to allow successful subscriptions.

Acceptance Criteria

Users should be able to subscribe to the newsletter without encountering any errors.

Purpose

To ensure users subscribe to the newsletter without errors.

Requirem#ents

• Investigate the root cause of the error message when users try to subscribe to the newsletter.
• Update the backend logic to ensure the newsletter subscription process functions correctly.
• Validate that users can successfully subscribe to the newsletter without encountering any errors.

Expected Outcome

• Users should be able to subscribe to the newsletter successfully without encountering any error messages.

Link: https://bulldozer-php.teams.hng.tech/
Watch Issue Video here: https://drive.google.com/file/d/1tkukS8iWKdmbI1laXwQSAQX1Iq8J88tN/view?usp=sharing

Ref

hngprojects/hng_boilerplate_nestjs#820