S2Member PHP Stripe Error

I keep getting two error messages from S2Member showing up in my PHP:

  1. Stripe Notice: Undefined property of Stripe_Customer instance: subscriptions
  2. PHP Fatal error: Call to a member function retrieve() on null in /web/content/wp-content/plugins/s2member-pro/src/includes/classes/gateways/stripe/stripe-utilities.inc.php on line 491

Since this is related to the Stripe integration I wanted to make sure that this isn’t blocking the occasional customer from making a purchase and see if there was some way to fix this.