Invalid line_items[0]: the product tax code is missing. Set the product's tax_code field to an eligible product tax code (more details: https://docs.stripe.com/payments/managed-payments/eligibility#product-tax-code-requirements). Product tax code is required for Managed Payments, which is enabled by default on your account. If you want to disable Managed Payments on this session, you can pass managed_payments[enabled]=false. You can configure whether Managed Payments is enabled by default at https://dashboard.stripe.com/acct_1UWafp1XTW3qrc6J/settings/managed-payments. Back