App Stuck at 'Spinning up manager process' - No App Logs - PDF_TAG_PROCESSOR

[Shoukat]

Subject: App Stuck at ‘Spinning up manager process’ - No App Logs - PDF_TAG_PROCESSOR

Hello Streamlit Community Support Team,

I am experiencing a persistent issue deploying my Streamlit application, PDF_TAG_PROCESSOR, to Streamlit Community Cloud. The app consistently gets stuck at the “Your app is in the oven” status, specifically at the “Spinning up manager process” stage, and never fully launches.

App Details:

• App URL: https://pdftagproceappr-aawx7kxyxj9ca9cqphsfck.streamlit.app/ (Please note: The exact subdomain part might change with new deployments, but this is the current pattern.)
• GitHub Repository: https://github.com/techsavvymind-netizen/PDF_TAG_PROCESSOR
• Main File Path: app.py
• Branch: main

Troubleshooting Steps Taken:

I have already performed the following steps to try and resolve the issue:

1. Corrected Git Setup: Ensured local repository is properly initialized, linked to the remote, and pushed all changes successfully.
2. Pinned Dependencies: Updated requirements.txt with specific, known-good versions:

   streamlit==1.36.0
   PyMuPDF==1.24.5
   pandas==2.2.2
   numpy==1.26.4
   

   Confirmed these are pushed to the main branch on GitHub.
3. Multiple Deployments: Deleted the app from Streamlit Community Cloud and redeployed it from scratch multiple times.
4. Simplified app.py: To rule out any issues with my application code, I temporarily replaced the entire content of app.py with the absolute minimum:

   import streamlit as st
   st.write("Hello, Streamlit! This is a test.")
   

   Even with this minimal code, the app still fails to launch and gets stuck at the same stage.
5. Checked Logs: I have thoroughly checked the “Terminal” and “App Logs” tabs within the “Manage app” section on the Streamlit Cloud dashboard. While the dependency processing (uv pip install) completes successfully, there are no further logs or error messages from my app.py script itself. The app simply remains stuck at “Spinning up manager process” indefinitely.

Observed Behavior:

The build logs consistently show successful dependency resolution, followed by the “Spinning up manager process” line, but then no further output, and the app never becomes accessible in the browser.

Recent Log Snippet:

 UTC     ] Logs for pdftagproceappr-aawx7kxyxj9ca9cqphsfck.streamlit.app/

──────────────────────────────────────────────────────────────────────────────────────── Provisioning machine… Preparing system… Spinning up manager process… Starting up repository: ‘pdf_tag_processor’, branch: ‘main’, main module: ‘app.py’ Cloning repository… Cloning into ‘/mount/src/pdf_tag_processor’…
Warning: Permanently added the ED25519 host key for IP address ‘140.82.116.3’ to the list of known hosts. Cloned repository! Pulling code changes from Github… Processing dependencies…
Using uv pip install.
Using Python 3.13.5 environment at /home/adminuser/venv
Resolved 43 packages in 557ms

Could you please investigate this issue on your end? It appears to be a platform-level problem preventing the Python script from initiating execution.

Thank you for your time and assistance.
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