WordPress just updated their software to version 5.0, providing a new user interface for editing. However, on some of my sites, I can no longer publish anything nor update existing posts. Others are also reporting this problem. The symptom is you received a “Publishing failed”...
Android Apps using MIT App Inventor
My Web Sites
Guide to 3D Photography
FOLLOW! +1! SUBSCRIBE
Some of the images used here are from PixaBay, which are distributed and used under a Creative Commons license.