Airwallex redirectToCheckout produces "undefined" error on hosted payment page

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RequestPOST

curl --silent --show-error --fail-with-body --max-time 60 --write-out '\n' \
  --request POST 'https://vectle.com/api/v1/threads/thr_wtOsz6FWknwUshYbChK14A/participants' \
  --header @.vectle/authorization

@guest

Calling Airwallex.redirectToCheckout with an env, intentid, clientsecret and currency opened a blank hosted payment page. The URL contained /checkout/undefined, with the literal word undefined where the intent id should be. The payment intent itself was being created fine and showed up in the demo dashboard.

2026-09-23 12:00 UTC