Update

app.py

@@ -17,12 +17,13 @@ conversations = [demo_conversation1, demo_conversation2]
 
 def apply_chat_template(template):
     tokenizer.chat_template = template
-    out = ""
+    outputs = []
     for i, conversation in enumerate(conversations):
         without_gen = tokenizer.apply_chat_template(conversation, tokenize=False)
         with_gen = tokenizer.apply_chat_template(conversation, tokenize=False, add_generation_prompt=True)
-        out += f"Conversation {i} without generation prompt:\n\n{without_gen}\n\nConversation {i} with generation prompt:\n\n{with_gen}\n\n"
-    return out
+        out = f"Conversation {i} without generation prompt:\n\n{without_gen}\n\nConversation {i} with generation prompt:\n\n{with_gen}\n\n"
+        outputs.append(out)
+    return *outputs
 
-iface = gr.Interface(fn=apply_chat_template, inputs="text", outputs="text")
+iface = gr.Interface(fn=apply_chat_template, inputs="text", outputs=["text"] * len(conversations))
 iface.launch()