Ekapp/skolehjem/database/seeds/RoleSeeder.php

<?php

use Illuminate\Database\Seeder;

class RoleSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        $roles = [
            "Administrator" => "Administrator",
            "User" => "Bruger",
        ];

        foreach ($roles as $key => $value) {

            try {
                if (\Spatie\Permission\Models\Role::findByName($key))
                    continue;
            } catch (Exception $e) {
                $permission = new \Spatie\Permission\Models\Role();

                $permission->name = $key;
                $permission->description = $value;

                $permission->save();
            }
        }
    }
}