2 msg.topic in calculation function node

There seems to be something horribly wrong. What do you see in the logs when you restart node-red? Dependent on what o/s you are running you may be able to do that using

node-red-stop
node-red-start

Given the old version of npm you were running, I would suggest following the advice Dave gave you on the other thread to upgrade your npm version and node-red using the script and see if that fixes this.

sow i have upgrade everything, but it is still the same.
see start up log file below.

Starting as a systemd service.
Started Node-RED graphical event wiring tool.
26 Nov 18:15:56 - [info]
Welcome to Node-RED

26 Nov 18:15:56 - [info] Node-RED version: v0.19.5
26 Nov 18:15:56 - [info] Node.js version: v10.13.0
26 Nov 18:15:56 - [info] Linux 4.9.59-v7+ arm LE
26 Nov 18:15:57 - [info] Loading palette nodes
26 Nov 18:16:02 - [info] Dashboard version 2.11.0 started at /ui
26 Nov 18:16:02 - [warn] ------------------------------------------------------
26 Nov 18:16:02 - [warn] [node-red-contrib-join/join] Type already registered
26 Nov 18:16:02 - [warn] ------------------------------------------------------
26 Nov 18:16:02 - [info] Settings file : /home/pi/.node-red/settings.js
26 Nov 18:16:02 - [info] Context store : 'default' [module=memory]
26 Nov 18:16:02 - [info] User directory : /home/pi/.node-red
26 Nov 18:16:02 - [warn] Projects disabled : set editorTheme.projects.enabled=true to enable
26 Nov 18:16:02 - [info] Flows file : /home/pi/.node-red/flows_raspberrypi.json
26 Nov 18:16:02 - [info] Server now running at http://127.0.0.1:1880/
26 Nov 18:16:02 - [warn]

Your flow credentials file is encrypted using a system-generated key.
If the system-generated key is lost for any reason, your credentials
file will not be recoverable, you will have to delete it and re-enter
your credentials.
You should set your own key using the 'credentialSecret' option in
your settings file. Node-RED will then re-encrypt your credentials
file using your chosen key the next time you deploy a change.

26 Nov 18:16:03 - [info] Starting flows
26 Nov 18:16:03 - [info] Started flows
26 Nov 18:16:03 - [info] [mpd-server:55dd1a9d.c15af4] Connected to MPD server localhost:6600

Ah - you have added a contrib node called join,,, and it is clashing with the built in node called join... so you must uninstall the one you added in.... then restart

So I Removed the contrib node called join and now i got it to workt.
thanks all for helping.