Turbopack Error: Failed to write page endpoint /_error

[timootten]

Turbopack version: da7cbb13
Next.js version: 0.0.0

Error message:

Failed to write page endpoint /_error

Caused by:
- [project]/src/app/globals.css [app-client] (css)
- creating new process
- node process exited before we could connect to it with exit code: 1

Debug info:
- Execution of TaskId { id: 2147483650 } transient failed
- Execution of get_all_written_entrypoints_with_issues_operation failed
- Execution of EntrypointsOperation::new failed
- Execution of all_entrypoints_write_to_disk_operation failed
- Execution of Project::emit_all_output_assets failed
- Execution of *emit_assets failed
- Execution of all_assets_from_entries_operation failed
- Execution of *all_assets_from_entries failed
- Execution of output_assets_operation failed
- Execution of <PageEndpoint as Endpoint>::output failed
- Failed to write page endpoint /_error
- Execution of PageEndpoint::output failed
- Execution of PageEndpoint::client_chunks failed
- Execution of *ChunkingContext::evaluated_chunk_group failed
- Execution of Project::client_chunking_context failed
- Execution of *get_client_chunking_context failed
- Execution of Project::module_ids failed
- Execution of Project::whole_app_module_graphs failed
- Execution of whole_app_module_graph_operation failed
- Execution of *ModuleGraph::from_single_graph failed
- Execution of SingleModuleGraph::new_with_entries failed
- [project]/src/app/globals.css [app-client] (css)
- Execution of primary_chunkable_referenced_modules failed
- Execution of <CssModuleAsset as Module>::references failed
- Execution of parse_css failed
- Execution of <PostCssTransformedAsset as Asset>::content failed
- Execution of PostCssTransformedAsset::process failed
- creating new process
- node process exited before we could connect to it with exit code: 1
  Process output:
  
  Process error output:
  node:internal/modules/cjs/loader:1189
    throw err;
    ^
  
  Error: Cannot find module 'C:\Users\timoo\Desktop\Projekte\NextJS-Instant-Navigation\.next\postcss.js'
      at Module._resolveFilename (node:internal/modules/cjs/loader:1186:15)
      at Module._load (node:internal/modules/cjs/loader:1012:27)
      at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:158:12)
      at node:internal/main/run_main_module:30:49 {
    code: 'MODULE_NOT_FOUND',
  }
  
  Node.js v22.2.0

[timootten]

$ bun run build && bun run start
$ next build --turbopack
⚠ experimental.dynamicIO has been renamed to experimental.cacheComponents. Please update your next.config.ts file accordingly.
▲ Next.js 15.4.2-canary.28 (Turbopack)

• Experiments (use with caution):
  ✓ dynamicIO
  · staleTimes
  ✓ globalNotFound
  ✓ clientSegmentCache
  ✓ browserDebugInfoInTerminal
  ✓ turbopackPersistentCaching

Creating an optimized production build ...

---

FATAL: An unexpected Turbopack error occurred. A panic log has been written to C:\Users\timoo\AppData\Local\Temp\next-panic-899ac07bbd4bc475b663138e5c24faf6.log.

To help make Turbopack better, report this error by clicking here.

✓ Finished writing to persistent cache in 281ms
✓ Finished writing to persistent cache in 9ms

[onestardao]

you're hitting a classic pre-bootstrap failure — system tries to resolve resources before proper module context is established.
we catalog this under "predeploy-collapse" (one of the 16 safety boundary failure modes we've documented).
fix isn't about turbotrack or file paths — it's about reordering your bootstrap logic so internal loaders don’t fire prematurely.

if you’re curious, we’ve mapped this out fully with tested countermeasures.
happy to share more — just let me know.

[joshguailee]

Hi, we're encountering a similar issue, could you elaborate on how you reorder your bootstrap logic?

[onestardao]

sorry to bump the thread, OP — adding this because someone asked for the “how”.

this crash matches our pre-deploy collapse / bootstrap-ordering class. build tries to touch resources before the module context is ready. quick fixes:

• move any side-effect imports out of top level: db/redis/prisma/kms/s3/dotenv should init inside handlers or a small createClient() factory, not on import
• centralize config: one tiny bootstrap.ts that reads env once and exports getters; all modules import from there
• guard singletons with a simple “init once” flag; avoid firing loaders during build
• clean state before retry: delete .next/cache and node_modules/.cache, fresh install, then rebuild

full checklist and failure map here:
[WFGY Problem Map]

if you want the step order I use, ping me and i’ll paste the minimal template.

[muhammadfaizan027915]

---

Failed to write app endpoint /page

Caused by:

• [project]/packages/ui/src/styles/globals.css [app-client] (css)
• creating new process
• reading packet length
• An existing connection was forcibly closed by the remote host. (os error 10054)

Debug info:

• Execution of TaskId { id: 2147483652 } transient failed
• Execution of get_written_endpoint_with_issues_operation failed
• Execution of endpoint_write_to_disk failed
• Execution of ::output failed
• Failed to write app endpoint /page
• Execution of AppEndpoint::output failed
• Execution of AppProject::app_module_graphs failed
• Execution of *::additional_entries failed
• Execution of *ModuleGraph::from_graphs failed
• Execution of SingleModuleGraph::new_with_entries_visited_intern failed
• [project]/packages/ui/src/styles/globals.css [app-client] (css)
• Execution of primary_chunkable_referenced_modules failed
• Execution of ::references failed
• Execution of parse_css failed
• Execution of ::content failed
• Execution of PostCssTransformedAsset::process failed
• creating new process
• reading packet length
• An existing connection was forcibly closed by the remote host. (os error 10054)

Same error here on running a mono repo.

[devlopermitesh]

bro did you fix this issue??