Update app.py

app.py

@@ -455,7 +455,7 @@ def chatbot_response(image_urls_str):
     
     if "http:/" in image_urls_str.lower() or "https:/" in image_urls_str.lower():
         # Extract image URL from user input
-        if "," not in user_input:
+        if "," not in image_urls_str:
             image_urls.append(image_urls_str)
         else:
             for url in image_urls_str.split(","):
@@ -514,13 +514,15 @@ choice = st.radio("Choose an option:", options)
 # User input
 if choice == options[0]:
     image_urls_str = st.text_input("Enter image URLs separated by commas")
+else:
+    image_urls_str = ""
 
 # Display chat messages
 for message in st.session_state.messages:
     with st.chat_message(message["role"]):
         st.markdown(message["content"])
 
-if image_urls_str:
+if image_urls_str != "":
     # Add user message to chat history
     st.session_state.messages.append({"role": "user", "content": image_urls_str})
     with st.chat_message("user"):