Hi,
My Streamlit app gets stuck at startup and shows “Hmm… looks like it’s taking longer than normal” again.
Based on prior occurrences, this is likely a Streamlit Cloud server-side issue. I’d appreciate your assistance in resolving it. Many thanks, Jimmy ~
Hey Jimmy, thanks for sharing your question and welcome to the Streamlit community! 
You’re not alone—many users have reported their apps getting stuck at startup with messages like “Hmm… looks like it’s taking longer than normal” or “Your app is in the oven.” This is often due to temporary issues with Streamlit Community Cloud infrastructure, resource limits, or sometimes a misconfiguration in your app files (like config.toml or requirements.txt).
If the issue persists for more than a few minutes, try rebooting your app from the workspace or Cloud logs. Also, double-check your config.toml for any invalid or invisible characters—removing its contents has resolved similar issues for others. If you recently updated dependencies or made code changes, a full redeploy or even deleting and recreating the app can help. For more details and troubleshooting steps, see the official docs and related forum threads: resource limits, reboot your app, and community discussion.
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Resolved. Many thanks for your reply.
For future reference: this app was pinned to Python 3.9, but Streamlit now requires Python ≥3.10. After upgrading the Python version to 3.10, the app worked again. If this happens again, may need to check the Python version first.
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