I found the root cause of this one. Fixed in https://git.cloudron.io/platform/box/-/commit/73a56830b05909c0a49def222667ad0902076e31 . Thanks for reporting!
@micmc yes, already implemented the crash fix -https://git.cloudron.io/cloudron/box/-/commit/d862f1f5b4f10b5852aed958ecc4ce42709103f7 . CF was returning an invalid response that our code was not prepared for.