Error message on empty insert and send slots

[Digital1]

First time posting. My apologies if I've missed something, but I've also been unable to find any related threads about my issue.

The symptom...
Clicking on the title of a track, an empty plug-in slot or send slot yields the following error message:
Assertion in "/Volumes/Development/238958/ProTools/NewFileLibs/Sys/MacOS/Sys_FileLocMacOS.cpp", line 230.

This of course prevents me from adding new inserts and sends or renaming tracks. There are other features I can still use by working around this error, but it would be nice to have my shortcuts back.

This happens randomly, first session I open or the Nth that day.

The cause...
Honestly, cannot for the life of me figure out what situation is causing this—it seems to be totally random.

So far...
Sometimes a system reboot will work, sometimes using disk utility's first aid feature works.

The Specs...
MacOS Mojave Version 10.14.6
2 x 2.4 GHz 6-Core Intel Xeon
ProTools 2019.12.0

Please let me know if any more information is necessary/helpful.
And thank you to anyone who is able to offer some insight