We introduced a builder to build an esp image and import it to the main image. Unfortunately that is not compatible with ppc64le architecture so we have to block the builder operation when building for that arch.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:0062