There is no error text, the deployed apps just dont boot (see attached screenshot). They are stuck when spinning up. Locally they work fine.
Python 3.12, streamlit the latest when deployed. On local machine 1.30
I have 2 apps that are very similar, I posted the link to one above. Both apps worked fine until yesterday but now they dont work any more. They work when run locally, but the deployed versions are stuck when booting up. They dont go past the “Spinning up…” step
Hey there, thanks for sharing your question and all the details! It sounds like your Streamlit apps are stuck at “Spinning up manager process” on Community Cloud, even though they work locally. This is a common issue and can be caused by several factors, especially when there are no error logs and the requirements look standard.
Based on the latest guidance, the most common causes are: (1) a mismatch in Python or package versions between local and cloud, (2) missing or incompatible dependencies, or (3) a temporary platform issue. Make sure your requirements.txt pins all package versions exactly as in your local environment, and that you’re not including built-in modules (like subprocess or pickle) in requirements.txt, as this can break the build. Also, Streamlit Community Cloud supports Python 3.12, but some packages may not yet be fully compatible—double-check that all your dependencies support Python 3.12. If you recently upgraded Python or any package, try rolling back to the versions that worked before. If the issue persists, try deleting and redeploying the app, as sometimes platform-side issues can cause this symptom. For more, see the FAQ: App works locally but not when deployed and deployment troubleshooting docs.
It sounds like your Streamlit apps are stuck at “Spinning up manager process” on Community Cloud, even though they work locally. This is a common issue and can be caused by several factors, especially when there are no error logs and the requirements look standard.