Sourcemaps upload failing with unknown error (http status: 413)

[abhinavkgrd]

I am facing problems with uploading my next.js app's sourcemaps to Sentry.

sdk (@sentry/nextjs :v7.74.0)
sentry backend (self-hosted 23.2.0)

withSentryConfig options used

{
  hideSourceMaps: false,
  widenClientFileUpload: true,
}

debug logs

photos:build: Source Map Upload Report
photos:build:   Minified Scripts
photos:build:     ~/_next/server/pages/404.js (sourcemap at 404.js.map)
photos:build:     ~/_next/server/pages/_app.js (sourcemap at _app.js.map)
photos:build:     ~/_next/server/pages/_document.js (sourcemap at _document.js.map)
photos:build:     ~/_next/server/pages/_error.js (sourcemap at _error.js.map)
photos:build:     ~/_next/server/pages/auth.js (sourcemap at auth.js.map)
photos:build:     ~/_next/server/pages/change-email.js (sourcemap at change-email.js.map)
photos:build:     ~/_next/server/pages/change-password.js (sourcemap at change-password.js.map)
photos:build:     ~/_next/server/pages/credentials.js (sourcemap at credentials.js.map)
photos:build:     ~/_next/server/pages/deduplicate.js (sourcemap at deduplicate.js.map)
photos:build:     ~/_next/server/pages/gallery.js (sourcemap at gallery.js.map)
photos:build:     ~/_next/server/pages/generate.js (sourcemap at generate.js.map)
photos:build:     ~/_next/server/pages/index.js (sourcemap at index.js.map)
photos:build:     ~/_next/server/pages/login.js (sourcemap at login.js.map)
photos:build:     ~/_next/server/pages/recover.js (sourcemap at recover.js.map)
photos:build:     ~/_next/server/pages/shared-albums.js (sourcemap at shared-albums.js.map)
photos:build:     ~/_next/server/pages/signup.js (sourcemap at signup.js.map)
photos:build:     ~/_next/server/pages/two-factor/recover.js (sourcemap at recover.js.map)
photos:build:     ~/_next/server/pages/two-factor/setup.js (sourcemap at setup.js.map)
photos:build:     ~/_next/server/pages/two-factor/setup/ManualMode.js (sourcemap at ManualMode.js.map)
photos:build:     ~/_next/server/pages/two-factor/setup/QRMode.js (sourcemap at QRMode.js.map)
photos:build:     ~/_next/server/pages/two-factor/verify.js (sourcemap at verify.js.map)
photos:build:     ~/_next/server/pages/verify.js (sourcemap at verify.js.map)
photos:build:   Source Maps
photos:build:     ~/_next/server/pages/404.js.map
photos:build:     ~/_next/server/pages/_app.js.map
photos:build:     ~/_next/server/pages/_document.js.map
photos:build:     ~/_next/server/pages/_error.js.map
photos:build:     ~/_next/server/pages/auth.js.map
photos:build:     ~/_next/server/pages/change-email.js.map
photos:build:     ~/_next/server/pages/change-password.js.map
photos:build:     ~/_next/server/pages/credentials.js.map
photos:build:     ~/_next/server/pages/deduplicate.js.map
photos:build:     ~/_next/server/pages/gallery.js.map
photos:build:     ~/_next/server/pages/generate.js.map
photos:build:     ~/_next/server/pages/index.js.map
photos:build:     ~/_next/server/pages/login.js.map
photos:build:     ~/_next/server/pages/recover.js.map
photos:build:     ~/_next/server/pages/shared-albums.js.map
photos:build:     ~/_next/server/pages/signup.js.map
photos:build:     ~/_next/server/pages/two-factor/recover.js.map
photos:build:     ~/_next/server/pages/two-factor/setup.js.map
photos:build:     ~/_next/server/pages/two-factor/setup/ManualMode.js.map
photos:build:     ~/_next/server/pages/two-factor/setup/QRMode.js.map
photos:build:     ~/_next/server/pages/two-factor/verify.js.map
photos:build:     ~/_next/server/pages/verify.js.map
photos:build:   DEBUG   2023-10-16 12:18:36.320067 +05:30 skipping update nagger because session is not attended
photos:build: error: API request failed
photos:build:   caused by: sentry reported an error: unknown error (http status: 413)
photos:build:   DEBUG   2023-10-16 12:18:36.915652 +05:30 skipping update nagger because session is not attended

The sourcemap upload is failing with HTTP status 413, suggesting that the sourcemaps are too large.

but I checked and the .next/server folder size is 9.7MB.

Just to debug, I even increased the max_api_file_upload_size to 100MiB just in case, the file size limit was the problem but that also didn't solve the problem.

Thanks in advance 🙏