LinkedIn Socialite Works on localhost, but not in product

In my local setup, I have no issues logging in with LinkedIn using Socialite, however, when I pushed it to production, I get a 500 server error after the LinkedIn login screen appears and I attempt to authenticate.

I have changed the domain in my session. php file:

'domain' => env('SESSION_DOMAIN', ".rockymountainweb.design"),

This is my Controller:

<?php

namespace App\Http\Controllers;

use Laravel\Socialite\Facades\Socialite;
use App\Models\User;
use Illuminate\Support\Facades\Auth;
use Illuminate\Http\Request;

class LoginWithLinkedInController extends Controller
{
     /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = '/dashboard';
 
    /**
     * Redirect the user to the Linkedin authentication page.
     *
     * @return Response
     */
    public function redirectToProvider($provider)
    {
        return Socialite::driver($provider)->scopes(['r_liteprofile', 'r_emailaddress'])->redirect();
    }
   
    /**
     * Obtain the user information from Linkedin.
     *
     * @return Response
     */
    public function handleProviderCallback($provider)
    {
        $user = Socialite::driver($provider)->user();
        $authUser = $this->findOrCreateUser($user, $provider);
        Auth::login($authUser, true);
        return redirect($this->redirectTo);
    }
   
    /**
     * If a user has registered before using social auth, return the user
     * else, create a new user object.
     * @param  $user Socialite user object
     * @param $provider Social auth provider
     * @return  User
     */
    public function findOrCreateUser($user, $provider)
    {
        $authUser = User::where('provider_id', $user->id)->first();
        if ($authUser) {
            return $authUser;
        }
        return User::create([
            'name'     => $user->name,
            'email'    => $user->email,
            'provider' => $provider,
            'provider_id' => $user->id
        ]);
    }
}

Routes:

Route::get('login/{provider}', [LoginWithLinkedInController::class, 'redirectToProvider']);
Route::get('{provider}/callback', [LoginWithLinkedInController::class, 'handleProviderCallback']);

My services.php file:

    'linkedin' => [
            'client_id' => env('LINKEDIN_CLIENT_ID'),
            'client_secret' => env('LINKEDIN_CLIENT_SECRET'),
            'redirect' => env('LINKEDIN_CALLBACK_URL'),
        ],

From the view:

    <div class="inline-flex justify-center">
                    <p class="w-1/2 my-auto text-lg font-medium text-gray-700">
                        Sign in with:
                      </p>
                  <a href="{{ url('/login/linkedin') }}" class="inline-flex justify-center w-full px-4 py-2 text-sm font-medium text-gray-500 bg-white border border-gray-300 rounded-md shadow-sm hover:bg-gray-50">
                    <span class="sr-only">Sign in with LinkIn</span>
                    <svg xmlns="http://www.w3.org/2000/svg" class="w-10 h-10" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" x="0px" y="0px" viewBox="0 0 32 32" xml:space="preserve"><g id="OUTLINE_copy"><path fill="#414752" d="M23.247 21.927v-5.36c0-2.872-1.533-4.208-3.577-4.208-1.649 0-2.388.907-2.8 1.544v-1.324h-3.107c.041.877 0 9.348 0 9.348h3.107v-5.221c0-.279.02-.558.103-.757.224-.558.735-1.136 1.593-1.136 1.125 0 1.574.857 1.574 2.113v5.001h3.107zM10.49 11.303c1.083 0 1.758-.718 1.758-1.616-.02-.917-.675-1.614-1.738-1.614s-1.757.697-1.757 1.614c0 .897.675 1.616 1.717 1.616h.02zm1.553 10.624v-9.348H8.937v9.348h3.106z"/><path fill="#414752" d="M16 1c8.271 0 15 6.729 15 15s-6.729 15-15 15S1 24.271 1 16 7.729 1 16 1m0-1C7.163 0 0 7.163 0 16s7.164 16 16 16 16-7.164 16-16S24.836 0 16 0z" id="Shopping_10_116_"/></g><metadata><rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:dc="http://purl.org/dc/elements/1.1/"><rdf:Description about="https://iconscout.com/legal#licenses" dc:title="linkedin,social,media,online" dc:description="linkedin,social,media,online" dc:publisher="Iconscout" dc:date="2017-09-15" dc:format="image/svg+xml" dc:language="en"><dc:creator><rdf:Bag><rdf:li>Epicflaticon by Alfredo</rdf:li></rdf:Bag></dc:creator></rdf:Description></rdf:RDF></metadata></svg>
                  </a>
                </div>

Directly from LinkedIn: Authorized redirect URLs for your app https://rockymountainweb.design/linkedin/callback

Hopefully, someone can give me an idea of where I may be going wrong. As I said, it works perfectly in localhost and I have been unable to figure this out for several days and I'm out of ideas.

Regards,

Edward