# Error with pretrained model: 'dict' object has no attribute 'to\_json\_string'

**URL:** <https://discuss.huggingface.co/t/error-with-pretrained-model-dict-object-has-no-attribute-to-json-string/77315>\
**Category:** Beginners\
**Created:** [March 13, 2024, 8:26pm UTC](https://discuss.huggingface.co/t/error-with-pretrained-model-dict-object-has-no-attribute-to-json-string/77315 "2024-03-13T20:26:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![russfischer](https://avatars.discourse-cdn.com/v4/letter/r/58f4c7/32.png) [@russfischer](https://discuss.huggingface.co/u/russfischer)\
**Post date:** [March 13, 2024, 8:26pm UTC](https://discuss.huggingface.co/t/error-with-pretrained-model-dict-object-has-no-attribute-to-json-string/77315/1 "2024-03-13T20:26:35Z")

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Simply trying to get the SetFit quickstart running:

> **[Quickstart](https://huggingface.co/docs/setfit/en/quickstart)**
>
> We’re on a journey to advance and democratize artificial intelligence through open source and open science.

All is well:

 ![image](https://us1.discourse-cdn.com/hellohellohello/original/3X/4/b/4bd998e4133ac606420dae9e9d488892398c3775.png)

until I train:

 ![image](https://us1.discourse-cdn.com/hellohellohello/original/3X/d/f/dfd445d46a368bbdc28d4e413981b2bff97e6543.png)

Then boom

 ![2024-03-13 16_23_20-Untitled.ipynb (2) - JupyterLab](https://us1.discourse-cdn.com/hellohellohello/original/3X/c/c/cc949d56dabd939c046ec161c5a0c474582dcbc5.png)  
 ![2024-03-13 16_23_44-Untitled.ipynb (2) - JupyterLab](https://us1.discourse-cdn.com/hellohellohello/original/3X/1/f/1fcb436f223c7abff84a8bbc2c96dd8503dd0dac.png)

Perhaps related to this issue:

> <https://github.com/state-spaces/mamba/pull/151>
>
> To fix :
> \`\`\`
> trainer.train()
> File "/home/julio/anaconda3/envs/mamba/lib…/python3.10/site-packages/transformers/trainer.py", line 1555, in train
> return inner\_training\_loop(
> File "/home/julio/anaconda3/envs/mamba/lib/python3.10/site-packages/transformers/trainer.py", line 1789, in \_inner\_training\_loop
> self.control = self.callback\_handler.on\_train\_begin(args, self.state, self.control)
> File "/home/julio/anaconda3/envs/mamba/lib/python3.10/site-packages/transformers/trainer\_callback.py", line 363, in on\_train\_begin
> return self.call\_event("on\_train\_begin", args, state, control)
> File "/home/julio/anaconda3/envs/mamba/lib/python3.10/site-packages/transformers/trainer\_callback.py", line 407, in call\_event
> result = getattr(callback, event)(
> File "/home/julio/anaconda3/envs/mamba/lib/python3.10/site-packages/transformers/integrations/integration\_utils.py", line 631, in on\_train\_begin
> model\_config\_json = model.config.to\_json\_string()
> AttributeError: 'MambaConfig' object has no attribute 'to\_json\_string'
> 
> \`\`\`
> when training with hugging face and saving the model.

I just need a workaround/hack if anyone has one. Thank you

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<div class="post-metadata">

**Author:** ![russfischer](https://avatars.discourse-cdn.com/v4/letter/r/58f4c7/32.png) [@russfischer](https://discuss.huggingface.co/u/russfischer)\
**Post date:** [March 14, 2024, 12:20pm UTC](https://discuss.huggingface.co/t/error-with-pretrained-model-dict-object-has-no-attribute-to-json-string/77315/2 "2024-03-14T12:20:02Z")

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To rule out any issues I might be having caused by installed libraries, I tried this again with a preconfigured Paperspace Gradient notebook ([setfit/notebooks at main · huggingface/setfit · GitHub](https://github.com/huggingface/setfit/tree/main/notebooks)).

I got the exact same error during training however

 ![image](https://us1.discourse-cdn.com/hellohellohello/original/3X/1/d/1d2667b68fe46b3e5e9fc2460ead5a96f0d46934.png)

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<div class="post-metadata">

**Author:** ![russfischer](https://avatars.discourse-cdn.com/v4/letter/r/58f4c7/32.png) [@russfischer](https://discuss.huggingface.co/u/russfischer)\
**Post date:** [March 14, 2024, 1:54pm UTC](https://discuss.huggingface.co/t/error-with-pretrained-model-dict-object-has-no-attribute-to-json-string/77315/3 "2024-03-14T13:54:13Z")

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Hey, works on Collab 🙂

 ![image](https://us1.discourse-cdn.com/hellohellohello/original/3X/e/1/e10a2f537eac6f67025cc2053bb7f0b46fd8a9f9.png)