I have two apps, and they have been working for few years. But, now, all of a sudden, I can see they are not waking up.
Cannot figure out what’s going on, as there is no error message. Any idea?
Streamlit
Streamlit
Hey there, thanks for reaching out and for being a long-time Streamlit user! 
When previously working apps suddenly won’t wake up and show no error message, it’s often due to resource limits, dependency issues, or platform-side changes. If your apps are stuck at “Your app is in the oven” or just won’t load, first try rebooting them from your Streamlit Community Cloud workspace or Cloud logs. If rebooting doesn’t help, check your requirements.txt for any outdated or incompatible dependencies, and make sure your Python and Streamlit versions are supported (currently 3.9–3.13 for Python). Sometimes, deleting and redeploying the app resolves stuck states or hidden errors.
If your app has hit resource limits, you’ll see errors like “Oh no. Error running app.” or “This app has gone over its resource limits.” In such cases, optimize memory usage, use st.cache_data or st.cache_resource, and move large datasets to a database if possible. If you still can’t wake the app, it may be a temporary platform issue—these do happen and are usually resolved by the Streamlit team. For more details and troubleshooting steps, see the official docs on resource limits, rebooting your app, and deployment issues. If you need more help, please share your requirements.txt and a minimal reproducible example so the community can jump in!
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I had the same a few weeks ago. I found out that I had to use a higher version of python (setting in streamlit). Now everything works fine for me. Maybe it works for you?
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Hey @Berk_Demir
I also had a similar issue with an old app that I deployed back in 2021 which run fine until only recently. As @TTESimone pointed out, it is indeed due to the use of older Python version. That app deployed in 2021 was running on Python 3.9 and current apps are at least 3.11. Thus, I’ve switched the Python version (which you can also do the same by clicking on Manage App at the bottom right of a deployed app then click Settings and in the Python version field choose a newer version like 3.11). As a result, you may also need to adjust the requirements.txtfile to use newer library versions. Finally, reboot the app.
Hope this helps!
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Thanks a lot, it worked!
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Thanks a lot, that was the problem!
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