dosubot[bot] commented on issue #34718: URL: https://github.com/apache/superset/issues/34718#issuecomment-3191738580
<!-- Answer --> Your Superset homepage is stuck because an error in superset_config.py is likely preventing the backend from starting correctly—this is a common result of misconfigured engine spec mappings or runtime exceptions in the config file. First, revert your recent changes in superset_config.py (comment out or remove the custom DuckDBEngineSpec mapping), then restart Superset. If the homepage loads normally, the patch was the cause. If not, check your Superset server logs right after startup for any error messages or stack traces related to superset_config.py or engine spec mappings—these logs will show exactly what went wrong and where. Once Superset is accessible again, you can carefully reapply the custom mapping, making sure to use the correct tuple-of-tuples structure and place it after all imports. Restart Superset after each change, and check both the UI and logs for errors. If you still get stuck, share the relevant error output from your logs for more targeted help. This behavior is expected if there's a config or mapping error: Superset loads superset_config.py at startup, and any exception there will block the backend, leaving the UI unresponsive or stuck on the homepage while waiting for API responses ([reference](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset/app.py)). <!-- Dosu Comment Footer --> *To reply, just mention [@dosu](https://go.dosu.dev/dosubot).* --- <sup>How did I do? [Good](https://app.dosu.dev/response-feedback/1662f16a-c542-4036-8486-ac32d301be89?feedback_type=great_response) | [Irrelevant](https://app.dosu.dev/response-feedback/1662f16a-c542-4036-8486-ac32d301be89?feedback_type=irrelevant_answer) | [Incorrect](https://app.dosu.dev/response-feedback/1662f16a-c542-4036-8486-ac32d301be89?feedback_type=incorrect_sources) | [Verbose](https://app.dosu.dev/response-feedback/1662f16a-c542-4036-8486-ac32d301be89?feedback_type=too_verbose) | [Hallucination](https://app.dosu.dev/response-feedback/1662f16a-c542-4036-8486-ac32d301be89?feedback_type=hallucination) | [Report 🐛](https://app.dosu.dev/response-feedback/1662f16a-c542-4036-8486-ac32d301be89?feedback_type=bug_report) | [Other](https://app.dosu.dev/response-feedback/1662f16a-c542-4036-8486-ac32d301be89?feedback_type=other)</sup> [](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/ask?utm_source=githu b) [](https://go.dosu.dev/discord-bot) [](https://twitter.com/intent/tweet?text=%40dosu_ai%20helped%20me%20solve%20this%20issue!&url=https%3A//github.com/apache/superset/issues/34718) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@superset.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: notifications-unsubscr...@superset.apache.org For additional commands, e-mail: notifications-h...@superset.apache.org
