Hey,

I was having the same problem than you. Turns out, you have to run a special command after you installed node if you installed it on a shared server:

setfattr -n user.pax.flags -v "mr" $(find $NVM_DIR -type f -iname "node" -o -iname "npm" -o -iname "npx")

You can read more about this on Dreamhost's support site:

Installing a custom version of NVM and Node.js

Overview This article walks you through installing Node.js using Node Version Manager (nvm) on a Shared, VPS or Dedicated server. DreamHost support is unable to assist with custom installations...