Unable to connect to arduino from serial

[hary]

@dceejay

dceejayLeader

If you remove /usr/bin/node and /etc/apt/sources/list.d/nodesource.list then re-run the script we then won't find node.js or it's installer and will re-install the 8.x version.

Ok, it has come back to node v8.11.4.
but instead of removing /etc/apt/sources/list.d/nodesource.list,
/etc/apt/sources.list.d/nodesource.list must be removed.
/etc/apt/sources/list.d/nodesource.list didn't exist on my raspbian raspberry pi

Thanks a lot for the assistance !