new install issue

[sunatthegilddotcom]

run into error in local mode

SyntaxError: Unexpected token '?'

I have filled .example.env and also created a rootgpt.env with correct replicate token. But I run into the following error. Can you please let me know how to fix this issue?

Thank you very much in advance!

npm run dev

dev next dev

/home/abc/roomGPT/node_modules/next/dist/cli/next-dev.js:344 showAll: args["--show-all"] ?? false, ^

SyntaxError: Unexpected token '?' at wrapSafe (internal/modules/cjs/loader.js:915:16) at Module._compile (internal/modules/cjs/loader.js:963:27) at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10) at Module.load (internal/modules/cjs/loader.js:863:32) at Function.Module._load (internal/modules/cjs/loader.js:708:14) at Module.require (internal/modules/cjs/loader.js:887:19) at require (internal/modules/cjs/helpers.js:74:18) at Object.dev (/home/abc/roomGPT/node_modules/next/dist/lib/commands.js:10:30) at Object. (/home/abc/roomGPT/node_modules/next/dist/bin/next:141:28) at Module._compile (internal/modules/cjs/loader.js:999:30)

[d4rkc0de]

You are probably using an old version of npm, try to upgrade your version:

sudo npm cache clean -f
sudo npm install -g n
sudo n stable

Restart the terminal then rerun the command: npm run dev

[sunatthegilddotcom]

Thank you very much for your help @d4rkc0de ! You are right. The commands above did the trick. You have a nice day!