We are seeing this on the user side. This user does not have Write access to the page object, and they are not a page builder.
Here is a mocked up page. I tried it 2 ways: with a Standard field and a custom field. If you remove permission (read) to the custom field used in the filter (Closed_Date_Only__c), then you get the page error thrown on the user side. The standard Salesforce fields (NextStep) don’t appear to be causing the issue. Weird.
