1.4.0 API Bug: xAI Plugin error :Credentials validation failed with status code 404

[17738302]

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Dify version

1.4.0

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

Adding xAI model plugin reports Credentials validation failed with status code 404 error message; I used version 1.3.0 normally before and even after reinstalling version 1.4.0 completely, the problem still persists.

API error message:

2025-05-17 21:57:48.463 ERROR [Dummy-1] [app.py:875] - Exception on /console/api/workspaces/current/model-providers/langgenius/x/x [POST]

Traceback (most recent call last):

File "/app/api/.venv/lib/python3.12/site-packages/flask/app.py", line 917, in full_dispatch_request

rv = self.dispatch_request()

     ^^^^^^^^^^^^^^^^^^^^^^^

File "/app/api/.venv/lib/python3.12/site-packages/flask/app.py", line 902, in dispatch_request

return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]

       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "/app/api/.venv/lib/python3.12/site-packages/flask_restful/init.py", line 489, in wrapper

resp = resource(*args, **kwargs)

       ^^^^^^^^^^^^^^^^^^^^^^^^^

File "/app/api/.venv/lib/python3.12/site-packages/flask/views.py", line 110, in view

return current_app.ensure_sync(self.dispatch_request)(**kwargs)  # type: ignore[no-any-return]

       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "/app/api/.venv/lib/python3.12/site-packages/flask_restful/init.py", line 604, in dispatch_request

resp = meth(*args, **kwargs)

       ^^^^^^^^^^^^^^^^^^^^^

File "/app/api/controllers/console/wraps.py", line 199, in decorated

return view(*args, **kwargs)

       ^^^^^^^^^^^^^^^^^^^^^

File "/app/api/libs/login.py", line 94, in decorated_view

return current_app.ensure_sync(func)(*args, **kwargs)

       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "/app/api/controllers/console/wraps.py", line 31, in decorated

return view(*args, **kwargs)

       ^^^^^^^^^^^^^^^^^^^^^

File "/app/api/controllers/console/workspace/model_providers.py", line 102, in post

But I added the xai model using OpenAI-API compatible and it worked fine;

✔️ Expected Behavior

How can i add xAI model?

❌ Actual Behavior

I can't add xAI model via plugin;