Upgrade to Laravel 5.7 problem consuming own API with Passport

Hi,

I just upgraded Laravel from 5.6 to 5.7 in my application and the only issue I discovered so far is the fact that any ajax request to my backend results in 401 Unauthorized. Everything worked fine on laravel 5.6.

I

• ran the migrations (didn't have any though)

php artisan migrate

• ran passport:install

php artisan passport:install

• driver option of the api authentication guard (in config/auth.php) is set to 'passport'

'guards' => [
        'web' => [
            'driver' => 'session',
            'provider' => 'users',
        ],

        'api' => [
            'driver' => 'passport',
            'provider' => 'users',
        ],
    ],

• the RoutesServiceProvider implements 'api' and 'auth:api' middlewares for the ApiRoutes

Route::prefix('api/v1')
            ->middleware(['api', 'auth:api'])
            ->namespace($this->namespace)
            ->group(base_path('routes/api.php'));

• added CreateFreshApiToken::class to web middleware groups in app/Http/Kernel.php

protected $middlewareGroups = [
        'web' => [
            \App\Http\Middleware\EncryptCookies::class,
            \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
            \Illuminate\Session\Middleware\StartSession::class,
            // \Illuminate\Session\Middleware\AuthenticateSession::class,
            \Illuminate\View\Middleware\ShareErrorsFromSession::class,
            \App\Http\Middleware\VerifyCsrfToken::class,
            \Illuminate\Routing\Middleware\SubstituteBindings::class,
            \Laravel\Passport\Http\Middleware\CreateFreshApiToken::class,
        ],

        ...
    ];

Also, all Axios requests have the correct headers set in resources/assets/js/bootstrap.js:

window.axios.defaults.headers.common['X-Requested-With'] = 'XMLHttpRequest';
let token = document.head.querySelector('meta[name="csrf-token"]');

if (token) {
    window.axios.defaults.headers.common['X-CSRF-TOKEN'] = token.content;
} else {
    console.error('CSRF token not found: https://laravel.com/docs/csrf#csrf-x-csrf-token');
}

I actualy ran all my migrations:fresh with seeders, cleared the cache but the darn thing still won't authenticate. Web links still work, I can authenticate in the application, I can even use Postman to make requests with a Barer token in the header and everything work. The only exception is consuming my own API from the front end.

Is there something I'm missing ?

Thanks in advance