"Failed to find entry-points" is thrown when importing old Scripts

Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly:

1. What Happened

on Unity 2021.3.22f1

in a New project with no objects except the defaults

imported some old scripts when the error showed up

2. How can we reproduce it using the example you attached

just Import the scripts into the editor

Notes:

• CQA Testing was not done as per the request of the developers
• Opening the user-attached project throws the “Failed to find entry-points” error