【已解决】tokenizer.chat_template is not set and no template argument was passed
finetuning的时候遇到这个问题：
Error in applying chat template from request: Cannot use apply_chat_template() because tokenizer.chat_template is not set and no template argument was passed! For information about writing templates and setting the tokenizer.chat_template attribute, please see the documentation at https://huggingface.co/docs/transformers/main/en/chat_templating
原因：
在模型合并后，我只复制了tokenizer.json到合并模型的文件夹，没有把tokenizer_config.json也复制过去
# 模型合并存储merged_model = model.merge_and_unload()# 将权重保存为safetensors格式的权重, 且每个权重文件最大不超过2GB(2048MB)merged_model.save_pretrained(config.merge_model_dir, max_shard_size="2048MB", safe_serialization=True)# 复制tokenizer.json到新文件夹shutil.copy(f'{config.model_local_path}tokenizer.json', config.merge_model_dir)解决：
# 模型合并存储merged_model = model.merge_and_unload()# 将权重保存为safetensors格式的权重, 且每个权重文件最大不超过2GB(2048MB)merged_model.save_pretrained(config.merge_model_dir, max_shard_size="2048MB", safe_serialization=True)# shutil.copy(f'{config.model_local_path}tokenizer.json', config.merge_model_dir)# 将tokenizer也保存到 merge_model_dirtokenizer.save_pretrained(config.merge_model_dir)