Field breaks on Craft upgrade

[tadward]

Recently updated a Craft install to the latest version, 3.4.18 and after the update was complete Entries Subset was "broken"

Through investigating the following showed up on the fields listing for each Entries Subset field:
nfourtythree\entriessubset\fields\EntriesSubsetField

When looking at the entries with those field(s) the following was listed:
Unable to find component class 'nfourtythree\entriessubset\fields\EntriesSubsetField'.

A similar warning was on the front-end:
Class 'nfourtythree\entriessubset\fields\EntriesSubsetField' not found

A possible fix was renaming the file under vendor/nfourtythree/entriessubset/src/fields from EntriesSubset.php to EntriesSubsetField.php. Doing that everything went back to working order.

Craft 3.4.18
Entries Subset 1.2.2