[BUG] Broken custom model on fireworks.ai #1845

Describe the bug
Using custom model such as accounts/fireworks/models/deepseek-v4p1-flash is broken on fireworks provider.

To Reproduce
Steps to reproduce the behavior:

1. Select accounts/fireworks/models/deepseek-v4p1-flash as custom model
2. Create any task
3. See error

Date/time: 2026-09-28T21:54:38.706Z
Extension version: 3.84.0
Provider: fireworks
Model: accounts/fireworks/models/deepseek-v4p1-flash

404
404 Model not found, inaccessible, and/or not deployed

Expected behavior
Model works.

What version of zoo are you running
i.e. 3.84.0