# How to resolve the 'Cannot use chat template functions...' error?

The `"Cannot use chat template functions because tokenizer.chat_template is not set and no template argument was passed!"` error usually occurs when using a model that lacks chat template support (e.g., `openai-community/gpt-2`). These models are not designed for structured chat interactions, causing request failures due to unsupported formatting.

To resolve this issue, ensure the local LLM server runs a model that supports `chat_template`. `Instruct models` (e.g., `google/gemma-2-2b-it`) can also be used, as they follow direct prompts without requiring a chat template.