Update src/streamlit_app.py

src/streamlit_app.py

@@ -78,6 +78,8 @@ def loadchats():
     state = workflow.get_state(config)
     messages = state.values.get("messages", [])
     for message in messages:
+        if(not message.content):
+            continue 
         if isinstance(message, HumanMessage):
             with st.chat_message("human"):
                 st.write(message.content)