Error saving dashboard with exemplar query 404 failure

We are trying to migrate to Grafana 8.3.3 and after reconstituting our dashboards into a new installation that’s backed by Postgres, we see errors saving dashboards. When looking into the Prometheus server, we see errors about exemplar query failing with a 404. I turn off the eyeball on the exemplar setting and it still errors out when saving.

Is there a version of Prometheus I can roll back to that doesn’t have this issue? Or a version of Grafana that still has the updated alerting UI but not this error with exemplars?