[Bug]: When adding a rerank model with ollama, a KeyError('Ollama') is prompted

[darkSuperman]

Is there an existing issue for the same bug?

• [x] I have checked the existing issues.

RAGFlow workspace code commit ID

none

RAGFlow image version

v0.16.0 slim

Other environment information

Actual behavior

When adding the rerank model with ollama, it prompts KeyError('Ollama'), but everything is normal when I call the api curl -s localhost:11434/api/embed -d '{"model":"linux6200/bge-reranker-v2-m3:latest","input":"The weather is nice today"}' , and I also added other embedding model with ollama and it was successful

Expected behavior

No response

Steps to reproduce

Use Ollama to add a rerank model

Additional information

2025-02-23 11:07:48,705 INFO     15 172.19.0.7 - - [23/Feb/2025 11:07:48] "GET /v1/llm/factories HTTP/1.1" 200 -
2025-02-23 11:07:49,493 ERROR    15 'Ollama'
Traceback (most recent call last):
  File "/ragflow/.venv/lib/python3.10/site-packages/flask/app.py", line 880, in full_dispatch_request
    rv = self.dispatch_request()
  File "/ragflow/.venv/lib/python3.10/site-packages/flask/app.py", line 865, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]
  File "/ragflow/.venv/lib/python3.10/site-packages/flask_login/utils.py", line 290, in decorated_view
    return current_app.ensure_sync(func)(*args, **kwargs)
  File "/ragflow/api/utils/api_utils.py", line 170, in decorated_function
    return func(*_args, **_kwargs)
  File "/ragflow/api/apps/llm_app.py", line 238, in add_llm
    mdl = RerankModel[factory](
KeyError: 'Ollama'
2025-02-23 11:07:49,494 INFO     15 172.19.0.7 - - [23/Feb/2025 11:07:49] "POST /v1/llm/add_llm HTTP/1.1" 200 -