Hi Dean,
It depends on which settings.js file on the conduit you updated. There is one under /opt/node-red/settings.js. You don’t want to update that one as it gets overwritten during firmware upgrades. The one you want to update is I believe under /var/config/app/current.
Btw why do you want to use the “fs” module, isn’t it available as file in/out nodes on node-red?
Thanks,
Ajay.