Thanks for the timely help.
I installed my Pro version of the Event Manager.
I ran the options tree wizard again. I may have had word wrap on the text file when I did it last time.
There are two WIE files shipped. One was for LearnDash related according to the file name. I imported them both again, importing the LearnDash WIE file second.
That helped.
These widgets still throw errors (hard to read; see screenshot attached). They appear to be related to a sidebar issue.
parentsandcarers Sidebar does not exist in theme (using Inactive)
Custom Menu No Title Widget already exists
Student Life Sidebar
Custom Menu No Title Widget already exists
learningresources Sidebar does not exist in theme (using Inactive)
Custom Menu No Title Widget already exists
tgat Sidebar does not exist in theme (using Inactive)
Custom Menu No Title Widget already exists