Issue Summary

Upon adding the filter by label/content by label macro to a page and filtering by a label, instead of page results, it displays an error message in preview/page:

"Error rendering macro 'contentbylabel' : CQL was parsed but the search manager was unable to execute the search. Error message: com.atlassian.confluence.api.service.exceptions.scale.SSStatusCodeException: There was an illegal request passed to XP-Search Aggregator API : HTTP/1.1 403 Forbidden"

Steps to Reproduce

1. Add a filter by label macro to a page
2. Add a label to filter results
3. Click on preview for the macro
4. Save macro changes 
5. Publish page

Expected Results

Page results based on the label are displayed correctly.

Actual Results

Error "Error rendering macro 'contentbylabel' : CQL was parsed but the search manager was unable to execute the search. Error message: com.atlassian.confluence.api.service.exceptions.scale.SSStatusCodeException: There was an illegal request passed to XP-Search Aggregator API : HTTP/1.1 403 Forbidden" is displayed instead.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available