I have tried adding a subfolder in the activity, adding a drive name in the activity, and I created a new folder for the files and pointed the automation to that. Even went so far as creating new credentials (App ID and Secret). None of these solutions have resolved the issue.
Other O365 activities still work fine in the scope when interacting with SharePoint in the O365 scope.
This automation has run perfectly fine for months with no issues until Jan 9.