dosubot[bot] commented on issue #37092: URL: https://github.com/apache/superset/issues/37092#issuecomment-3743088766
<!-- Greeting --> Hi @tamdo-terralogic! I'm [Dosu](https://go.dosu.dev/dosubot) and I’m helping the superset team. <!-- Answer --> The "Fatal error" on dashboard save in Superset 6.0.0 is most often caused by one of these issues: - A mismatch between frontend and backend Superset versions, especially around color fields like `map_label_colors` and `shared_label_colors` in dashboard metadata. Make sure both are running the exact same version. Even a small mismatch can cause schema errors that show up as "Fatal error" in the UI [(source)](https://github.com/apache/superset/issues/35082). - Invalid or missing color fields in your dashboard or chart metadata. Check your dashboard's JSON metadata for `map_label_colors` and `shared_label_colors`. If you see errors about "Unknown field" or "Not a valid mapping type", try removing or correcting those fields [(source)](https://github.com/apache/superset/issues/31397). - Charts with a NULL `query_context` can cause dashboard save failures. Try opening and resaving each chart in the dashboard to rebuild their query context [(source)](https://github.com/apache/superset/issues/31872). - If your dashboard has owners but no tags, there's a known bug where metadata changes may not persist or saving may fail. Try adding a tag to the dashboard (via the UI or API) and then save again [(source)](https://github.com/apache/superset/issues/34688). - If the dashboard is a template or uses template datasets, it is read-only and cannot be saved or edited [(source)](https://github.com/apache/superset/pull/36673). - If the "me/" endpoint is failing, check your user roles and permissions—especially that your user has "can write on dashboard" permission. Permission issues can cause both dashboard save and "me/" endpoint failures [(source)](https://github.com/apache/superset/issues/32836). To pinpoint the root cause, check your Superset backend logs for the full error or stack trace when the save fails—this usually reveals the exact field or permission problem. If you want to isolate the issue, try saving a minimal dashboard (no custom CSS, no owners, no tags, just a simple chart) and see if the error persists. <!-- Dosu Comment Footer --> *To reply, just mention [@dosu](https://go.dosu.dev/dosubot).* --- <sup>How did I do? 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