Setting up WS with t3App

I'm following the TRPC repo by Katt, but I keep getting ENV vars being invalid when I run the WSS.

This is the script, but it doesn't seem to work

   "dev:wss": "cross-env PORT=3001 tsx watch src/server/wsDevServer.ts",

   "dev:wss": "cross-env PORT=3001 tsx watch src/server/wsDevServer.ts",

Setting up WS with t3App - Theo's Typesafe Cult