Fix the user_input problem

app.py

@@ -19,9 +19,12 @@ st.write("version : alpha 0.0.1")
 # creating a single-element container
 placeholder = st.empty()
 
-user_input = st.text_input("What do you do or say ?")
+st.session_state["saved_text"] = st.session_state["text"] 
+st.session_state["text"] = ""
+
+user_input = st.text_input("What do you do or say ?",key = "text")
 if user_input :
-    child.sendline(str(user_input))
+    child.sendline(str(st.session_state["saved_text"]))
     user_input=""
 
 while True: