Laravel 5.1, stripe: You cannot use a Stripe token more than once

Hello there, I have a problem with subscribing to a stripe plan, the message I get:

You cannot use a Stripe token more than once: tokenxxx

What could cause a problem?

public function upgradeSilver() {

        $bid = Session::get('builderId');

        $token = $_POST['stripeToken'];

        try {

            $user = \App\User::find($bid);

            if (!$user->onPlan('silver')) {

                $user->subscription('silver')->create($token);
                $charge = \Stripe\Charge::create(array(
                    "amount"        => 4000, // amount in cents, again
                    "currency"      => "gbp",
                    "source"        => $token,
                    "description"   => "Silver package charge")
                );

                $update = \App\User::where('id', '=', $bid)->update([
                    'quotes_left' => $user->quotes_left + 20
                ]);

                return Redirect::route('builders-packages')->with('success', 'You have successfully ordered a Silver package. Thank you!');
            
            } else {
                return Redirect::route('builders-packages')->with('error', 'You are already subscribed');
            }
            
            
        } catch(\Stripe\Error\Card $e) {
            return Redirect::route('builders-packages');
        }

    }