Bug - Edit Library Errors

When I attempt to edit one of my Widget Libraries, I am receiving a few errors. This is preventing me from being able to edit any of my libraries (which are all located in a folder on my OneDrive).

Here’s a replication video:

Replication Steps:
Libraries ‘…’ button > Edit Library > ‘Add Widget Library’ Popup appears > Edit Library

  1. Exception has been thrown by the target of an invocation

The following occur even when I do not proceed to ‘Edit Library’:
Click ‘Cancel’ > return to ‘Add Widget Library’ popup > Cancel
2. Object reference not set to an instance of an object

Cancel
3. Client is null

I am still having this issue and am unable to modify any of my widget Libraries.