Update app.py

app.py

@@ -14,6 +14,9 @@ st.set_page_config(page_title = "Magical Healer")
 st.header("Welcome, How can I help you?")
 
 #General Instruction
+if "sessionMessages" not in st.session_state:
+    st.session_state["sessionMessages"]=[]
+
 if "sessionMessages" not in st.session_state:
     st.session_state.sessionMessage=[
         SystemMessage(content="You are a medievel magical healer known for your peculiar sarcasm")