"Model schema not found" error only in agents

[profonline]

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Dify version

0.15.0

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

1. Install smollm model in Ollama
2. Create an agent with this model
3. Start a conversation with the agent

✔️ Expected Behavior

I was expecting to get the results from the agent.

❌ Actual Behavior

A "Model schema not found" error occurred instead of the actual answer from the agent. And this happened only with agents. No problem at all with chatbots or completions.

[dosubot]

Hello @profonline! I'm here to help you with bug reports, answer questions, and assist you in becoming a contributor. Let's work together to resolve any issues you may be experiencing.

The "Model schema not found" error in Dify's agent module typically occurs when the model_schema is not retrieved or lacks necessary features. This can happen if the get_model_schema method of the LargeLanguageModel class returns None or an empty schema for the specified model and credentials. Additionally, ensure that the model instance is of type LargeLanguageModel, as the error can also be raised if it is not ^[1][2].

To resolve this issue, verify that the get_model_schema method is correctly implemented for the smollm model and that it returns a valid schema. Also, ensure that the model instance is properly configured as a LargeLanguageModel.

To continue talking to Dosu, mention @dosu.

---

^{Help Dosu learn! Give it feedback: Great Response | Irrelevant Answer | Incorrect Sources | Too Verbose | Hallucination | Other}

[vincentvc168]

I got the same error in agent only. It is new bug?

[crazywoola]

This error is raised by these line.

dify/api/core/app/apps/agent_chat/app_runner.py

Lines 205 to 206 in 56e15d0

	if not model_schema or not model_schema.features:
	raise ValueError("Model schema not found")

Can you guys provide the settings of the model in orchestration page and settings page.

[vincentvc168]

Hello @profonline! I'm here to help you with bug reports, answer questions, and assist you in becoming a contributor. Let's work together to resolve any issues you may be experiencing.

The "Model schema not found" error in Dify's agent module typically occurs when the model_schema is not retrieved or lacks necessary features. This can happen if the get_model_schema method of the LargeLanguageModel class returns None or an empty schema for the specified model and credentials. Additionally, ensure that the model instance is of type LargeLanguageModel, as the error can also be raised if it is not [1][2].

To resolve this issue, verify that the get_model_schema method is correctly implemented for the smollm model and that it returns a valid schema. Also, ensure that the model instance is properly configured as a LargeLanguageModel.

To continue talking to Dosu, mention @dosu.

Help Dosu learn! Give it feedback: Great Response | Irrelevant Answer | Incorrect Sources | Too Verbose | Hallucination | Other

How can I solve this problem via UI? As Dify does not allow me debugging it via code level.

[crazywoola]

Please provide the necessary information as I mentioned above.

[hsoftxl]

same error

[zhuzhe1983]

same error

[MitraSafarinejad]

Hello @crazywoola,

I'm encountering the same error specifically with my Llama models. I am using Together AI as the provider for these models, and I have kept the default settings.
dify version = 0.14.2

[vincentvc168]

I encountered the same error - "Model scheme not found" in agent with Qwen and Mistral model. I did not try other but I expect the result should be the same. Thanks!
Remark: I upgraded to 0.15.1 but the error is the same.

[vincentvc168]

This error is raised by these line.

dify/api/core/app/apps/agent_chat/app_runner.py

Lines 205 to 206 in 56e15d0

	if not model_schema or not model_schema.features:
	raise ValueError("Model schema not found")

Can you guys provide the settings of the model in orchestration page and settings page.

Hello @crazywoola , I am beginner level. I do not know the exact setting you want. I copied the setting file here.
.zip Thank you!

[JiweiZh]

same error when I use agent and ollama