App Crashing Repeatedly on Streamlit Cloud

Community Cloud
,
1

Link to app: https://footverse.streamlit.app/

Hi everyone — I’m experiencing frequent crashes on my Streamlit Cloud app with the generic error message:

“Oh no. Error running app. If this keeps happening, contact support.”

Context

  • The app loads a DataFrame from a database and uses @st.cache_data to cache it.
  • DataFrame shape: (8369, 315).
  • I load filtered chunks per page from the cached function (not all at once).
  • I store user filter selections in st.session_state.
  • Previously, when the DataFrame was smaller (e.g., 2500 rows), the app worked fine — even when I was (mistakenly) storing it in session state.
  • The app has recently seen increased traffic — ~200 users/day.
  • Now the app keeps crashing sporadically.

What I’ve Tried

  • I removed storing the DataFrame in st.session_state.
  • Used memory_profiler locally — peak memory usage ~650MB.
  • The app works reliably in local testing with the full dataset.
  • No detailed error messages or logs are shown in the cloud logs — just the generic crash error.

Environment

  • Streamlit version: 1.45.0
  • Python version: 3.12
  • Requirements:
streamlit
pandas
plotly.express
plotly
lxml
matplotlib
streamlit-javascript
scikit-learn
umap-learn
firebase-admin
orjson
gdown
# webdriver-manager
# undetected-chromedriver
# selenium-stealth

Looking For

Any ideas or suggestions on:

  • Whether the issue is memory-related on the Streamlit Community Cloud backend?
  • Ways to optimize or paginate better?
  • How to get better crash logs or isolate what’s failing?

Thanks so much in advance :folded_hands:

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