Node-RED on IBM Bluemix for IBM Watson IoT Platform

Using an unsupported version of Node.js

You should upgrade to the latest Node.js LTS release
whenever i open my node red ibm bluemix i have having these errors. it covers my flow tabs please provide a solution for these errors:
1.Using an unsupported version of Node.js
You should upgrade to the latest Node.js LTS release

Have you read and followed the instructions in the docs?

https://nodered.org/docs/getting-started/ibmcloud