UE4.20 Blueprint Graph Module Causing Win64 Package Failure. What is happening?

I’m getting some editor source that is causing build issues similar to this when trying to deploy to Win64 platforms. It appears that maybe the graph portion of the editor is being packaged without other editor dependencies, but I am not quite sure exactly what could be happening or what I could try to work around the problem. Please find the build log attached. Anyone have any idea what triggers these errors and/or what I could do about them? Thanks.