Update tokenizer_config.json

tokenizer_config.json

@@ -29,7 +29,7 @@
   },
   "additional_special_tokens": [],
   "bos_token": "<s>",
-  "chat_template": "\n{{ bos_token }}\n{% for message in messages %}\n{% if message['from'] == 'system' %}\n{% if message['value']%}\n{{'### System:\n' + message['value']+'\n\n'}}\n{% endif %}{% elif message['from'] == 'human' %}\n{{'### User:\n' + message['value']+'\n\n'}}\n{% elif message['from'] == 'gpt' %}\n{{'### Assistant:\n'  + message['value'] + '</s>' + '\n'}}\n{% endif %}\n{% if loop.last and add_generation_prompt %}\n{{ '### Assistant:\n' }}\n{% endif %}\n{% endfor %}\n",
+  "chat_template": "{{ bos_token }}{% for message in messages %}{% if (message['role'] == 'user') != (loop.index0 % 2 == 0) %}{{ raise_exception('Conversation roles must alternate user/assistant/user/assistant/...') }}{% endif %}{% if message['role'] == 'user' %}{{ '[INST] ' + message['content'] + ' [/INST]' }}{% elif message['role'] == 'assistant' %}{{ message['content'] + eos_token}}{% else %}{{ raise_exception('Only user and assistant roles are supported!') }}{% endif %}{% endfor %}",
   "clean_up_tokenization_spaces": false,
   "eos_token": "</s>",
   "legacy": true,