Error "property 'entryURL' has not been set" submitting contribution, originating with PropertyBag changes in 6.4.1
I tested stripe 6.4.2 with mjwshared 0.8.1 on our CiviCRM site, and it caused our contribution page to break. If the payment information is correct, then you get "property 'entryURL' has not been set" on an error page, instead of the confirmation. We're currently on CiviCRM 5.28.3 with Drupal 8.9.3. Drupal 8 is really the only thing unusual about our setup.
I confirmed that the error still occurred with a newly created confirmation page, using default settings with the Stripe payment processor selected. The error does not occur if this is switched to a dummy payment processor.
It went away when I reverted to stripe 6.4 with mjwshared 0.7. The line of code where the bug originates appears to be this one: https://lab.civicrm.org/extensions/stripe/-/blob/master/CRM/Core/Payment/Stripe.php#L1109
I can't figure out what's calling that getErrorURL, though.