Comfy crash on missing UserId

[lerignoux]

Expected Behavior

When comfy receive a request with a missing Comfy.UserId (from app local data), it crashes on a 500 error.

This can happen for instance when using --multi-user if the front end contains an old user that was removed on service side.

Actual Behavior

server returns a 500 error
Front end loads indefinitely until local storage is cleaned

Steps to Reproduce

• start comfy in multi-user (--multi-user)
• open the front end in your browser
• empty your comfyUI user folder (ex comfy in docker and container is re-created)
• reload comfyUI page in front end
• comfy return a 500 and ComfyUI_frontend loads indefinitely

Debug Logs

raise KeyNotFound -> 500 error

Other

No response

[lerignoux]

ComfyUI PR: #7439
ComfyUI_frontend PR: Comfy-Org/ComfyUI_frontend#3289