getting error on running npm test command in workspace

I am getting below error on running npm test command in workspace "After installing mocha and chai and creating test folder". treehouse:~/workspace$ npm test

workspace@1.0.0 test /home/treehouse/workspace
mocha

/home/treehouse/workspace/node_modules/yargs-parser/build/index.cjs:991
throw Error(yargs parser supports a minimum Node.js version of ${minNodeVersion}. Read our version support policy: https://github.com/yargs/yargs-parser#supported-nodejs-versions);
^

Error: yargs parser supports a minimum Node.js version of 10. Read our version support policy: https://github.com/yargs/yargs-parser#supported-nodejs-versions
at Object.<anonymous> (/home/treehouse/workspace/node_modules/yargs-parser/build/index.cjs:991:15)
at Module._compile (module.js:653:30)
at Object.Module._extensions..js (module.js:664:10)
at Module.load (module.js:566:32)
at tryModuleLoad (module.js:506:12)
at Function.Module._load (module.js:498:3)
at Module.require (module.js:597:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (/home/treehouse/workspace/node_modules/mocha/lib/cli/options.js:12:21)
at Module._compile (module.js:653:30)
npm ERR! Test failed. See above for more details.