Cashier 7.2 Creating a Subscription

I am in the early steps of implementing Cashier to work with Stripe for the billing of my product.

I am running Laravel 5.7.

I have the following code to create the subscription:

$token = $request->stripeToken;
$organisation = Organisation::findOrFail($request->organisationid);
$organisation->newSubscription('Test Name', 'plan')->create($token);

When I run this code, I get the error: Missing required param: source.

$request->stripeToken is received from the Stripe JS form and does display a result.

Any help is greatly appreciated