Laravel nova 404 error

I have a resource called Professions where I've recently changed the column ID to profession_id because in the future I'll need a hasMany relationship.

Model:

class Profession extends Model
{
    protected $primaryKey = 'profession_id';
}

In the Nova resource:

public static $search = [
    'profession_id',
];

In the migration file:

$table->increments('profession_id');

I've ran php artisan migrate:refresh and all tables and columns are created correctly.

This is what happens:

• When I create a profession, after pressing the 'Create Profession' button in Nova I get a 404. The profession is created however.
• Listing, viewing and editing professions works fine

The weird thing is that if I edit a Profession and save it, it will go to the view page where the new Profession record is displayed. This is the exact same page where I should land if I press 'Create Profession', however that gives a 404.

I'm struggling here because the 404 doesn't give any info on where the error occurs.