UI error "Cannot connect to server: timeout." when using REFLEX_USE_GRANIAN=1 (--env prod)

[borolepratik]

Describe the bug
I have a background task that can run anywhere from a few seconds to a few hundred seconds. After ~150 seconds, the UI shows a toast "Cannot connect to server: timeout." when using REFLEX_USE_GRANIAN=1 (prod env). The task is still running as i can see logs on the terminal as well as backend ping responds with pong.

After refreshing the page, the state is set to whatever would have been when the task was completed, but none of the gui items respond to mouse events. Have to restart reflex (had to kill the browser as well).

This behavior is not observed when running reflex regularly.

To Reproduce
Apologies, no code that i can provide.

Specifics (please complete the following information):

• Python Version: 13.3.1
• Reflex Version: 0.6.8
• OS: Windows 11 WSL

Related

• [BUG] Gunicorn workers out of memory in prod mode #4588

[linear]

ENG-4543 UI error "Cannot connect to server: timeout." when using REFLEX_USE_GRANIAN=1 (--env prod)