after upgrading to the latest version v.48.6 (from 47.9) we have the issue that some of our existing questions are failing due to this error (these question rely on different tables):
Invalid query: {:query {:source-query {:joins [{:fields ["should be either :all or :none" "distinct"]}]}}}
thanks for your answer. Meanwhile we solved the problem already. Syncing the database schema again, discarding saved field values and re-scan field values helped.