Shiny app not rendering on Posit Connect

I created an app using shiny for python that uses tabs to display tables by user. It renders beautifully using the proxy server on my dev machine, but when I deploy it to Connect, it doesn't render, just makes a list of user names and labels with no data. Even if data wasn't being returned, I would expect the tabs to still render. In the logs, I get the following:

2024/12/05 8:33:47 AM: [rsc-session] Received signal: interrupt
2024/12/05 8:33:47 AM: [rsc-session] Terminating subprocess with interrupt ...
2024/12/05 8:33:47 AM: [rsc-session] Terminated subprocess with signal: interrupt

Any ideas?

On Connect:

On Proxy Server: