langchain + gpt4all

[Kuramdasu-ujwala-devi]

System Info

LangChain v0.0.225, Ubuntu 22.04.2 LTS, Python 3.10

Information

• [X] The official example notebooks/scripts
• [ ] My own modified scripts

Related Components

• [X] LLMs/Chat Models
• [ ] Embedding Models
• [ ] Prompts / Prompt Templates / Prompt Selectors
• [ ] Output Parsers
• [ ] Document Loaders
• [ ] Vector Stores / Retrievers
• [ ] Memory
• [ ] Agents / Agent Executors
• [ ] Tools / Toolkits
• [ ] Chains
• [ ] Callbacks/Tracing
• [ ] Async

Reproduction

I'm executing https://github.com/hwchase17/langchain/blob/master/docs/extras/modules/model_io/models/llms/integrations/gpt4all.ipynb code on my local machine, IDE is VSCode Getting this error - AttributeError: 'Model' object has no attribute '_ctx'

Expected behavior

[dosubot[bot]]

Answer generated by a 🤖

Answer

I understand that you're encountering an error message stating AttributeError: 'Model' object has no attribute '_ctx' while executing the GPT4All integration code from LangChain on your local machine. This error suggests that there might be a compatibility issue between the LangChain version you're using and the GPT4All model.

Here's what I suggest you do to address this issue:

1. First, make sure you're using the latest version of LangChain. You can update LangChain by running the following command in your terminal:

%pip install --upgrade langchain

2. Next, verify that the GPT4All model you're using is compatible with your current version of LangChain. You can usually find this information on the GPT4All GitHub page.

3. Then, inspect the attributes of the GPT4All class in the langchain/llms/gpt4all.py file. The _ctx attribute should be defined in this class or in its parent class LLM. If it's not, you might need to update the GPT4All class or the LLM class.

4. If the error still persists, consider using a different GPT4All model or check for updates for the model you're currently using.

Please note that this is just one potential solution based on the information you've provided. Also, as an AI, I can only process text and cannot view images or links.

If you find that my solution is correct and you believe this is a bug that could impact other users, I encourage you to make a pull request to help improve LangChain. If my solution contradicts your experience, I recommend upgrading to the latest version of LangChain and trying again.

Sources

• docs/extras/modules/model_io/models/llms/integrations/gpt4all.ipynb
• langchain/llms/gpt4all.py

---

This response is meant to be useful, save you time, and share context. It is not meant to be a precise solution, but rather a starting point for your own research.

Help me be more useful! Please leave a 👍 if this is helpful and 👎 if it is irrelevant.

[standby24x7]

Last few weeks, many people including me encountered this symptom. gpt4all had major update from 0.3.6 to 1.0.
Some modification was done related to _ctx.

As far as I can tell, langchain 0.0.225 + gpt4all 1.0.2 works without this error, for me. One more things to know. I had to modify following part.

#Upto gpt4all 0.3.6 #llm = GPT4All(model=model_path, n_ctx=1000, backend="gptj", verbose=False)

#gpt4all 1.0 and later llm = GPT4All(model=model_path, backend="gptj", verbose=False)

[NicoleNL]

Using langchain 0.0.225 + gpt4all 1.0.2 I'm getting this error: Found model file at /local_path/ggml-gpt4all-j-v1.3-groovy.bin Invalid model file Traceback (most recent call last): File "/local_path/llm_gpt4all.py", line 23, in llm = GPT4All(model=local_path, callbacks=callbacks, verbose=True) File "/path/python3.10/site-packages/langchain/load/serializable.py", line 74, in init super().init(**kwargs) File "pydantic/main.py", line 341, in pydantic.main.BaseModel.init pydantic.error_wrappers.ValidationError: 1 validation error for GPT4All root Unable to instantiate model (type=value_error)

My code:

from langchain import PromptTemplate, LLMChain from langchain.llms import GPT4All from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler

template = """Question: {question}

Answer: Let's think step by step."""

prompt = PromptTemplate(template=template, input_variables=["question"])

Callbacks support token-wise streaming

callbacks = [StreamingStdOutCallbackHandler()]

local_path = "/model_path/ggml-gpt4all-j-v1.3-groovy.bin" #downloaded from https://gpt4all.io/index.html

Verbose is required to pass to the callback manager

llm = GPT4All(model=local_path, callbacks=callbacks, verbose=True)

llm_chain = LLMChain(prompt=prompt, llm=llm)

question = "What NFL team won the Super Bowl in the year Justin Bieber was born?"

llm_chain.run(question)

[Kuramdasu-ujwala-devi]

@ dosu-bot When i upgrade I got this error . Later installed particular version - langchain==0.0.171 pygpt4all==1.1.0

[dosubot[bot]]

🤖

Sure, I'd be happy to help you with your upgrade issue. To better assist you, could you please provide the following additional information:

1. The exact error message you're receiving when you try to upgrade LangChain.
2. The steps you took before encountering the error.
3. Whether you've made any modifications to the example notebooks/scripts.
4. The version of VSCode you're using.

This information will help me understand the problem more clearly and provide a more accurate solution.

---

This response is meant to be useful and save you time. It is not meant to be a precise solution, but rather a starting point for your own research.

Help me be more useful! Please leave a 👍 if this is helpful and 👎 if it is irrelevant.

If you want to continue the conversation, start your reply with @dosu-bot.

[dosubot[bot]]

Hi, @Kuramdasu-ujwala-devi! I'm Dosu, and I'm here to help the LangChain team manage our backlog. I wanted to let you know that we are marking this issue as stale.

Based on my understanding, you encountered an error while executing code from the LangChain repository. The error message you received was "AttributeError: 'Model' object has no attribute '_ctx'". You provided a screenshot showing the expected behavior. In the comments, I suggested updating LangChain and verifying compatibility with the GPT4All model. standby24x7 mentioned that using langchain 0.0.225 + gpt4all 1.0.2 resolved the issue for them. However, NicoleNL reported a different error with langchain 0.0.225 + gpt4all 1.0.2. You also mentioned encountering an error during the upgrade process, and I asked for more information to assist with the upgrade issue.

Before we proceed, we would like to confirm if this issue is still relevant to the latest version of the LangChain repository. If it is, please let us know by commenting on this issue. Otherwise, feel free to close the issue yourself, or the issue will be automatically closed in 7 days.

Thank you for your understanding and cooperation. We look forward to hearing from you soon!

Best regards, Dosu