I have some code <https://github.com/domainaware/parsedmarc/blob/master/parsedmarc/elastic.py#...> that saves data to Elasticsearch. It runs fine in Python 3.5.2 (cpython), but raises an exception when running on pypy 3 6.0.0 (Python 3.5.3). Any ideas why? File "/opt/venvs/parsedmarc/site-packages/parsedmarc/elastic.py", line 366, in save_forensic_report_to_elasticsearch forensic_doc.save()File "/opt/venvs/parsedmarc/site-packages/elasticsearch_dsl/document.py", line 394, in save index=self._get_index(index),File "/opt/venvs/parsedmarc/site-packages/elasticsearch_dsl/document.py", line 138, in _get_index raise ValidationException('You cannot write to a wildcard index.') elasticsearch_dsl.exceptions.ValidationException: You cannot write to a wildcard index I also asked Stack Overflow. You can answer there for internet points. :) https://stackoverflow.com/questions/51368293/why-does-elasticsearch-raise- elasticsearch-dsl-exceptions-validationexception-y