`group_by=authors_count` not working anymore

[Andreas Pacher]

Dear all,

until Walden (data version 2), requests like https://api.openalex.org/works?group_by=authors_count&filter=publication_year:2015-2024 (note the group_by=authors_count) used to work well -- but it stopped functioning for me; adding "&data-version=1" only led to a 500 Error.

May I ask whether this issue is known and might be fixed in the future?

Thanks a lot,

Andreas