I have a different error after attempting to create a new asset. See attached image.
UPDATED: the apostrophe must be removed from the word of Chilton in the field of Author(s) under User Fields tab. It appeared to be resolved.
After upgrading 20.0.0.15 from version 17 a few weeks ago, the Item Picture(s) tab isn't available. It has been keep crashing the whole program every time after clicking on Item Picture(s) tab. Advise.