Self hosted giscus error : "fetch failed"

[deep9699]

Have Self hosted giscus on https://self-host-giscus.vercel.app/ and try to get script if i type any random repo in the api then it returns error that giscus is not installed in this repo which is right but when i enter the repo name for which self hosted giscus is installed it throws an error

{error : "fetch failed"}

even when try to run build in local it throws fetch error

Error occurred prerendering page "/en". Read more: https://nextjs.org/docs/messages/prerender-error
TypeError: fetch failed
at Object.fetch (node:internal/deps/undici/undici:11730:11)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
at async Promise.all (index 1)
at async getStaticProps (D:\Learning\Docusaurus\giscus.next\server\pages\index.js:972:43)
at async Next_Translate__getStaticProps__18d354bdc4d (D:\Learning\Docusaurus\giscus.next\server\pages\index.js:1124:17)
at async renderToHTML (D:\Learning\Docusaurus\giscus\node_modules\next\dist\server\render.js:386:20)
at async D:\Learning\Docusaurus\giscus\node_modules\next\dist\export\worker.js:304:36
at async Span.traceAsyncFn (D:\Learning\Docusaurus\giscus\node_modules\next\dist\trace\trace.js:79:20)

info - Generating static pages (5/5)

Build error occurred
Error: Export encountered errors on following paths:
/: /en
at D:\Learning\Docusaurus\giscus\node_modules\next\dist\export\index.js:404:19
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
at async Span.traceAsyncFn (D:\Learning\Docusaurus\giscus\node_modules\next\dist\trace\trace.js:79:20)
at async D:\Learning\Docusaurus\giscus\node_modules\next\dist\build\index.js:1230:21
at async Span.traceAsyncFn (D:\Learning\Docusaurus\giscus\node_modules\next\dist\trace\trace.js:79:20)
at async D:\Learning\Docusaurus\giscus\node_modules\next\dist\build\index.js:1092:17
at async Span.traceAsyncFn (D:\Learning\Docusaurus\giscus\node_modules\next\dist\trace\trace.js:79:20)
at async Object.build [as default] (D:\Learning\Docusaurus\giscus\node_modules\next\dist\build\index.js:65:29)
error Command failed with exit code 1.