Is anyone else experiencing issues extending Offers?

Summary

Is anyone else experiencing issues extending Offers?

Content

We upgraded to 17.8 on 11/16, but just recently (last week) had reports of users being unable to extend offers.   We are not using Fluid -- this in the old UI (I guess they are calling it Flex now).   I'm attaching the error below.    So far it has been reported by Hungary and APAC.  I was able tor replicate in production, but not in staging.  In staging I was able to successfully extend the offer.