Update app.py

app.py

@@ -41,15 +41,15 @@ authenticator = stauth.Authenticate(
     config['cookie']['expiry_days']
 )
 
-# Use default location for login and logout
-name, authentication_status, username = authenticator.login('Login')
+# Use positional arguments with a valid location parameter
+name, authentication_status, username = authenticator.login('Login', 'main')
 
-if not authentication_status:
+if authentication_status is None or authentication_status is False:
     st.error('Authentication failed. Please refresh and try again.')
     st.stop()
 
 st.sidebar.write(f"Welcome *{name}*")
-authenticator.logout('Logout')
+authenticator.logout('Logout', 'sidebar')
 
 # ------------------------------
 # Load Models