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Fatal error: Declaration of FS\StripeCheckout\XF\Payment\Stripe::createCheckoutSession(XF\Entity\PurchaseRequest $purchaseRequest, XF\Purchasable\Purchase $purchase, $product, $planId = null, &$error = null) must be compatible with DBTech\StripeCheckout\XF\Payment\Stripe::createCheckoutSession(XF\Entity\PurchaseRequest $purchaseRequest, XF\Purchasable\Purchase $purchase, &$error = null): ?Stripe\Checkout\Session in /home/davidderin/public_html/src/addons/FS/StripeCheckout/XF/Payment/Stripe.php on line 103