A recent issue in Salesforce Lightning has been identified as causing certain Archive Package pages to display as empty, preventing access to options like "View" and "New." This is impacting the Activities List View and Policies (Depreciated) tab.
To resolve the issue appearing in the Activities tab: Add the following to the URL:
/list?filterName=OB_Archiver__All_Logs
This should come after the URL: OB_Archiver__ArchiveLog__c
To resolve the issue appearing in the Policies (Deprecated) tab: Add the following to the URL:
/list?filterName=OB_Archiver__All_Policies
For more information, see Salesforce documentation for Error 'The Requested Resource Does not Exist' on List Views from Managed Package