Errors on Upgrade to 7.2

for bayviewboom.org
website now says:

This page isn’t working
bayviewboom.org is currently unable to handle this request.
HTTP ERROR 500
Click to expand…

error log says:

[Tue Feb 11 12:04:19.696058 2020] [core:alert] […]

See original post by invalid@example.com (johnywhy)