Upload chat_template.jinja with huggingface_hub

chat_template.jinja

@@ -12,9 +12,6 @@
     {%- set first_user_has_system = false -%}
 {%- endif -%}
 {%- for message in loop_messages -%}
-    {%- if (message['role'] == 'user') != (loop.index0 % 2 == 0) -%}
-        {{- raise_exception("Conversation roles must alternate user/assistant/user/assistant/...") }}
-    {%- endif -%}
     {%- if message['role'] == 'user' -%}
         {{- '<|user_start|>' }}
         {%- if loop.first and first_user_has_system -%}
@@ -45,6 +42,8 @@
             {{- raise_exception("Unsupported assistant content type") }}
         {%- endif -%}
         {{- '<|assistant_end|>' }}
+    {%- else -%}
+        {{- raise_exception("Unexpected message role: " + message['role'] + ". Only 'user' and 'assistant' roles are supported after the optional initial system message.") }}
     {%- endif -%}
 {%- endfor -%}
 {%- if add_generation_prompt -%}