[SOLVED] Next JS : Error: EPERM: operation not permitted, open

Next JS : Error: EPERM: operation not permitted, open

I am trying to build the next Js app production files to deploy it on cPanel, when I execute npm run dev the app is working just fine but as I start to build a production file with the help of this video(https://youtu.be/1ykSXau838c) and executes npm run build it gives me an error in the terminal as given below:

PS C:\Users\hp\Desktop\reactJs-project\NextJs\test-app> npm run build

> test-app@0.1.0 build
> next build

info  - Checking validity of types
info  - Creating an optimized production build .node:events:368
      throw er; // Unhandled 'error' event
      ^

Error: EPERM: operation not permitted, open 'C:\Users\hp\Desktop\reactJs-project\NextJs\test-app\.next\trace'
Emitted 'error' event on WriteStream instance at:
    at emitErrorNT (node:internal/streams/destroy:157:8)
    at emitErrorCloseNT (node:internal/streams/destroy:122:3)
    at processTicksAndRejections (node:internal/process/task_queues:83:21) {    
  errno: -4048,
  code: 'EPERM',
  syscall: 'open',
  path: 'C:\\Users\\hp\\Desktop\\reactJs-project\\NextJs\\test-app\\.next\\trace'
}

so I just want to know is there any way to solve this problem?

Solution

Posting comment from Koronag as an answer (as it helped me with this error and seems the most likely cause)...

This error is commonly seen when running a build while the dev server is already running.

E.g. in my case, I had a local build running via npm run dev and was trying to commit/push code, which invoked a Git Hook that also runs npm run dev.