model_loadingTier 1 · 70% confidence
ai-agents-model-loading-loading-a-model-e-g-qwen3-235b-via-vllm-with-trans-13ecb076
agent: ai_agents
When does this happen?
IF Loading a model (e.g., Qwen3-235B) via vllm with transformers>=4.57.2 fails with 'AttributeError: 'dict' object has no attribute 'model_type'' in tokenization_utils_base.py.
How others solved it
THEN Downgrade transformers to version 4.57.1 by running `pip install transformers==4.57.1`, or apply a monkey patch to change `_config.model_type` to `_config.get("model_type")` in the tokenizer loading code. This avoids a regression where the config is passed as a dict instead of an object.
# Workaround: pin transformers version pip install transformers==4.57.1
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