test: assertion error in stream

gradio_interface/app.py

@@ -68,9 +68,17 @@ def generate_response(message, chat_history, image):
             messages.append(HumanMessage(content=content))
         else:
             messages.append(AIMessage(content=content))
+    
     encoded = encode_image_to_base64(image)
-    messages.append(HumanMessage(content={"type":"text","text":message}))
-    messages.append(HumanMessage(content={"type":"image_url","image_url":encoded}))
+    
+    # Create a properly formatted multimodal content list
+    multimodal_content = [
+        {"type": "text", "text": message},
+        {"type": "image_url", "image_url": {"url": encoded}}
+    ]
+    
+    # Append a single HumanMessage with the multimodal content
+    messages.append(HumanMessage(content=multimodal_content))
 
     try:
         stream_iter = llm.stream(messages)