Install serialport@0.14.1 on RIO

[nextcontrol]

Hi
I have not been able to install serialport on a RIO, I have tried with the current version and with the previous one
I had previously done it with some RiO without any problem

[Beno]

Looks like you are trying to install it from the command line.
Also looks like you are trying to install it as root, which is why you are getting a permissions issue.

We recommend that you install the version of any nodes you want via the pallet manager.

Install older version/specific version of a node-red node?

Sometimes its necessary to downgrade a node version or install a specific version and you may not have shell or may not want to add shell to your groov device just to do this Node-RED node version change. Good news. If you are running Node-RED version 1.2 or newer (ie, anything since August 2020) you can install specific versions of a node right from the manage pallet interface. First, you need to get the node version you want. You can look at the npm page and find older versions there. Here…

If you really want to install via command line, you need to be the user ‘dev’, not root.
sudo su dev

[nextcontrol]

Beno
Thanks for your quick help, “sudo su dev” worked fine for me