I have a problem when I deploy my flow, I am using arduino running firmata firmware and it has running fine when I usede a RPI but I am now using a Unbunto PC, all other nodes there is no problem when I deploy. I can see that the Arduino node is installed
I have updated node - red to latest ver.
Did you restart node-red and refresh the browser after the npm install?
If you did then go into your .node-red folder and run npm list node-red-node-arduino
Post the full output from that command, including the line with the command. Copy/paste, not screenshot please.