how to use

You already have the app running.

What happened:

• A next dev process is already active on PID 92056
• It is serving this same project directory
• Next first noticed port 3000 was busy and considered 3001, but then detected it was the same project already running, so it aborted with ELIFECYCLE

The key line is this:

Another next dev server is already running.

So do one of these:

Option 1: Use the existing server
Open:

http://localhost:3000

Option 2: Stop the old one, then restart cleanly

kill 92056
pnpm dev

If kill does not stop it:

kill -9 92056
pnpm dev

To verify what is holding port 3000:

lsof -i :3000

Your assumption to stress-test: this is not a build failure. It is a duplicate dev-server process problem.

Best clean workflow:

• keep one terminal running pnpm dev
• do not start a second pnpm dev in another terminal for the same project
• if you lost track of the old process, kill it and restart once

If you want, paste the output of lsof -i :3000 and I’ll tell you exactly whether it’s only Next.js or something else is squatting on that port.