Socket.io private chat example outdated

[theSmartRed]

I am trying to run the private chat example following the readme instructions but I see this error trying to install the client side

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: private-messaging@0.1.0
npm ERR! Found: @vue/cli-service@undefined
npm ERR! node_modules/@vue/cli-service
npm ERR!   dev @vue/cli-service@"~4.5.0" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer @vue/cli-service@"^3.0.0 || ^4.0.0-0" from @vue/cli-plugin-babel@4.5.19
npm ERR! node_modules/@vue/cli-plugin-babel
npm ERR!   dev @vue/cli-plugin-babel@"~4.5.0" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.

I am using Node 18.15 and NPM 9.5 that are the current LTS versions for both. How to fix?