Laravel Spark Registration Requiring Two Clicks

I recently did a laravel spark update (I hadn't updated for some time). Now, I have a registration problem. The first time I hit register, I get the error:

Something went wrong. Please try again or contact customer support.

However, the next time I hit register (without changing anything), it registers without a hitch...weird. Here is my registration form code in the /resources/views/vendor/spark/auth/register-common-form.blade.php:

<form class="form-horizontal" role="form">
    <!-- Team Name -->
    @if (Spark::usesTeams())
        <div class="form-group" :class="{'has-error': registerForm.errors.has('team')}" v-if=" ! invitation">
            <label class="col-md-4 control-label">Team Name</label>

            <div class="col-md-6">
                <input type="name" class="form-control" name="team" v-model="registerForm.team" autofocus>

                <span class="help-block" v-show="registerForm.errors.has('team')">
                    @{{ registerForm.errors.get('team') }}
                </span>
            </div>
        </div>
    @endif

    <!-- Name -->
    <div class="form-group" :class="{'has-error': registerForm.errors.has('name')}">
        <label class="col-md-4 control-label">Name</label>

        <div class="col-md-6">
            <input type="name" class="form-control" name="name" v-model="registerForm.name" autofocus>

            <span class="help-block" v-show="registerForm.errors.has('name')">
                @{{ registerForm.errors.get('name') }}
            </span>
        </div>
    </div>


    <!-- E-Mail Address -->
    <div class="form-group" :class="{'has-error': registerForm.errors.has('email')}">
        <label class="col-md-4 control-label">E-Mail Address</label>

        <div class="col-md-6">
            <input type="email" class="form-control" name="email" v-model="registerForm.email">

            <span class="help-block" v-show="registerForm.errors.has('email')">
                @{{ registerForm.errors.get('email') }}
            </span>
        </div>
    </div>

    <!-- Password -->
    <div class="form-group" :class="{'has-error': registerForm.errors.has('password')}">
        <label class="col-md-4 control-label">Password</label>

        <div class="col-md-6">
            <input type="password" class="form-control" name="password" v-model="registerForm.password">

            <span class="help-block" v-show="registerForm.errors.has('password')">
                @{{ registerForm.errors.get('password') }}
            </span>
        </div>
    </div>

    <!-- Password Confirmation -->
    <div class="form-group" :class="{'has-error': registerForm.errors.has('password_confirmation')}">
        <label class="col-md-4 control-label">Confirm Password</label>

        <div class="col-md-6">
            <input type="password" class="form-control" name="password_confirmation" v-model="registerForm.password_confirmation">

            <span class="help-block" v-show="registerForm.errors.has('password_confirmation')">
                @{{ registerForm.errors.get('password_confirmation') }}
            </span>
        </div>
    </div>

    <!-- Terms And Conditions -->
    <div v-if=" ! selectedPlan || selectedPlan.price == 0">
        <div class="form-group" :class="{'has-error': registerForm.errors.has('terms')}">
            <div class="col-md-6 col-md-offset-4">
                <div class="checkbox">
                    <label>
                        <input type="checkbox" name="terms" v-model="registerForm.terms">
                        I Accept The <a href="/terms" target="_blank">Terms Of Service</a>
                    </label>

                    <span class="help-block" v-show="registerForm.errors.has('terms')">
                        @{{ registerForm.errors.get('terms') }}
                    </span>
                </div>
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-6 col-md-offset-4">
                <button class="btn btn-primary" @click.prevent="register" :disabled="registerForm.busy">
                    <span v-if="registerForm.busy">
                        <i class="fa fa-btn fa-spier fa-spin"></i>Registering
                    </span>

                    <span v-else>
                        <i class="fa fa-btn fa-check-circle"></i>Register
                    </span>
                </button>
            </div>
        </div>
    </div>
</form>

Here is the code from my app/Http/Controllers/Auth/AuthController.php

<?php

namespace AppHttpControllersAuth;

use AppUser;
use Validator;
use AppHttpControllersController;
use IlluminateFoundationAuthThrottlesLogins;
use IlluminateFoundationAuthAuthenticatesAndRegistersUsers;

class AuthController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Registration & Login Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles the registration of new users, as well as the
    | authentication of existing users. By default, this controller uses
    | a simple trait to add these behaviors. Why don't you explore it?
    |
    */

    use AuthenticatesAndRegistersUsers, ThrottlesLogins;

    /**
     * Where to redirect users after login / registration.
     *
     * @var string
     */
    protected $redirectTo = '/';

    /**
     * Create a new authentication controller instance.
     *
     * @retu void
     */
    public function __construct()
    {
        $this->middleware($this->guestMiddleware(), ['except' => 'logout']);
    }

    /**
     * Get a validator for an incoming registration request.
     *
     * @param  array  $data
     * @retu IlluminateContractsValidationValidator
     */
    protected function validator(array $data)
    {
        retu Validator::make($data, [
            'name' => 'required|max:255',
            'email' => 'required|email|max:255|unique:users',
            'password' => 'required|min:6|confirmed',
        ]);
    }

    /**
     * Create a new user instance after a valid registration.
     *
     * @param  array  $data
     * @retu User
     */
    protected function create(array $data)
    {
        retu User::create([
            'name' => $data['name'],
            'email' => $data['email'],
            'password' => bcrypt($data['password']),
        ]);
    }
}

I must be missing something. I am not sure why it wouldn't work the first time, but would the second?

Any advise would be great.