Node.js on plesk

I am having problems installing modules from the [login to view URL] and I need someone who understands Plesk Onyx v17 using Phusion Passanger. My error is as follows: stderr: npm WARN lifecycle npm is using /opt/plesk/node/7/bin/node but there is no node binary in the current PATH. Use the `--scripts-prepend-node-path` option to include the path for the node binary npm was executed with. /opt/plesk/node/7/lib/node_modules/npm/bin/node-gyp-bin/node-gyp: line 3: node: command not found