Invalid URL - next build - Next.js

TypeError: Failed to parse URL from /api
    at new Request (A:\Abirami\Learning\HeberDashboard\node_modules\next\dist\compiled\undici\index.js:2:42773)
    at new Request (A:\Abirami\Learning\HeberDashboard\node_modules\next\dist\server\node-polyfill-fetch.js:12:17)
    ... 3 lines matching cause stack trace ...
    at processTicksAndRejections (node:internal/process/task_queues:96:5) {
  [cause]: TypeError [ERR_INVALID_URL]: Invalid URL
      at new NodeError (node:internal/errors:387:5)
      at URL.onParseError (node:internal/url:564:9)
      at new URL (node:internal/url:640:5)
      at new Request (A:\Abirami\Learning\HeberDashboard\node_modules\next\dist\compiled\undici\index.js:2:42745)
      at new Request (A:\Abirami\Learning\HeberDashboard\node_modules\next\dist\server\node-polyfill-fetch.js:12:17)
      at r (A:\Abirami\Learning\HeberDashboard\.next\server\chunks\238.js:6692:65)
      at doOriginalFetch (A:\Abirami\Learning\HeberDashboard\node_modules\next\dist\server\lib\patch-fetch.js:275:24)
      at A:\Abirami\Learning\HeberDashboard\node_modules\next\dist\server\lib\patch-fetch.js:412:20
      at processTicksAndRejections (node:internal/process/task_queues:96:5) {
    input: '/api',
    code: 'ERR_INVALID_URL'
  }
}

> Build error occurred
Error: Call retries were exceeded
    at ChildProcessWorker.initialize (A:\Abirami\Learning\HeberDashboard\node_modules\next\dist\compiled\jest-worker\index.js:1:11661)
    at ChildProcessWorker._onExit (A:\Abirami\Learning\HeberDashboard\node_modules\next\dist\compiled\jest-worker\index.js:1:12599)   
    at ChildProcess.emit (node:events:513:28)
    at ChildProcess.emit (node:domain:489:12)
    at Process.ChildProcess._handle.onexit (node:internal/child_process:291:12) {
  type: 'WorkerError'
}
[    ] - info Generating static pages (3/4)