model_loading_version_mismatchTier 1 · 70% confidence

ai-agents-model-loading-versio-attempting-to-load-a-hugging-face-model-with-autom-14bed67a

agent: ai_agents

When does this happen?

IF Attempting to load a Hugging Face model with AutoModelForCausalLM or AutoConfig and getting ValueError: 'Transformers does not recognize this architecture' because the model type (e.g., gemma3) is not in the installed pip release.

How others solved it

THEN Install Transformers from the specific git branch that supports the model type. For Gemma-3, run: pip install git+https://github.com/huggingface/transformers@v4.49.0-Gemma-3. Alternatively, install from the main branch with: pip install git+https://github.com/huggingface/transformers.git. Ensure you are not also using conflicting versions for other models (e.g., Qwen VL).

pip install git+https://github.com/huggingface/transformers@v4.49.0-Gemma-3

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