Hi, I have deployed an app on streamlit, here is the link
https://ds-scheduling-app-v2-e9drgrdtyhzieagggdzajv.streamlit.app/
It was working for few hours but now getting an error NET::ERR_CERT_AUTHORITY_INVALID. Please support
Welcome to the Streamlit community, and thanks for sharing your question (and the screenshot)! 
The error NET::ERR_CERT_AUTHORITY_INVALID means your browser can’t verify the SSL certificate for your Streamlit app. My understanding is that, for apps deployed on Streamlit Community Cloud, SSL/TLS is managed automatically by Streamlit, and you shouldn’t need to configure certificates yourself. This error is usually temporary and can be caused by browser caching, system date/time issues, or rare certificate propagation delays on the hosting side. According to Streamlit Docs, Community Cloud already serves your app with valid TLS, and you don’t need to set up SSL manually.
If the issue persists across devices and browsers, it may be a temporary problem with the certificate authority or a rare propagation issue. Some users have reported similar issues that resolved themselves after a short time or after clearing browser cache, checking system date/time, or trying a different device (example discussion). If the problem continues for all users, it could be a platform-side issue, and you may want to wait a bit and try again, or reach out on the Streamlit forums for further support.
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