laravel-widgets | Rinvex Widgets is a powerful and easy to use widget system

I recently performed a rather large update to this web app, and for the most part it went off without a hitch... Until the app tries to send an SMS notification from staging/production.

The upgrade from laravel 7.x to 8.x was quite simple and straightforward. At the same time we also installed Laravel Horizon. Everything went according to plan, and all works fine locally.

When we deploy to staging/production however, queued SMS notifications fail with the following exception:

ReflectionException: Class Http\Adapter\Guzzle6\Client does not exist in /home/forge/dev.example.com/releases/20210609194554/vendor/laravel/framework/src/Illuminate/Container/Container.php:836

Looking in the stack trace we can see that Nexmo is the culprit:

#5 /home/forge/dev.example.com/releases/20210609194554/vendor/nexmo/laravel/src/NexmoServiceProvider.php(150): Illuminate\Foundation\Application->make()

However in our composer.json file we are requiring Guzzle 7 with the following:

"guzzlehttp/guzzle": "^7.3",

It is worth mentioning again at this point, I have no issues sending SMS locally, the main difference between local and staging environments is that locally I use Laravel Valet and Staging uses Laravel Envoyer.

What I've tried so far:

• Changing "guzzlehttp/guzzle": "^7.3" to "guzzlehttp/guzzle": "^6.5|^7.3"
• Running php artisan horizon:purge and php artisan horizon:terminate both manually and in a deployment hook.
• Restarting the laravel horizon daemon on forge.
• trying php artisan queue:restart
• running composer dump-autoload and composer dump-autoload -o
• deleting composer.lock and the vendor/ directory from current/ then running composer install
• Restarting PHP, Nginx, and eventually the entire server :(

and more...

Any help is greatly appreciated

UPDATE Below:

Complete composer.json:

I was working on a migration in my project and instead of running php artisan migrate I ran php artisan migrate:fresh and this then cleared all my tables and the data in them. Now my DB has all blank tables but now I am running into an issue when I am trying to seed it again. I am able to seed it with the seeders I have made but I am also using voyager and I am unable to run the voyager seeder.

The voyager docs says that I should run this command to run seed the voyager tables:

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