nextjs - 💡(How to fix) Fix Failed to parse postponed state with Z_BUF_ERROR on vercel deployment [3 comments, 4 participants]

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vercel/next.js#86511Fetched 2026-04-08 02:10:31
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Error Message

Server error: Failed to parse postponed state Error: unexpected end of file Browser console error: Error: Connection closed. The error only occurs on deployment, not in local development The error appears to be related to corrupted/incomplete compressed data in the postponed state that PPR generates Tried to remove all logic and left the page and the parent layout empty and still got same error

Code Example

node 24
next 16.0.4
RAW_BUFFERClick to expand / collapse

Link to the code that reproduces this issue

https://github.com/arisstogiannos/qrderly/blob/dev/src/app/%5Blocale%5D/(website)/get-started/%5Bproduct%5D/business-setup/page.tsx

To Reproduce

cant reproduce

Current vs. Expected behavior

Current behavior: The page fails to load with the following errors:

Server error: Failed to parse postponed state Error: unexpected end of file at ignore-listed frames { errno: -5, code: 'Z_BUF_ERROR' }

Browser console error: Error: Connection closed. at eu (deeedf44c97ddc53.js:1:27846) at t (deeedf44c97ddc53.js:1:28201)

Expected behavior: The page should load successfully as it does in local development.

Provide environment information

node 24
next 16.0.4

Which area(s) are affected? (Select all that apply)

Partial Prerendering (PPR)

Which stage(s) are affected? (Select all that apply)

Vercel (Deployed)

Additional context

Additional context The error only occurs on deployment, not in local development Removing all logic from the component doesn't fix the issue The error appears to be related to corrupted/incomplete compressed data in the postponed state that PPR generates

Environment Next.js version: 16.0.4

Happens only with el locale set and not with en which is weird. Tried to remove all logic and left the page and the parent layout empty and still got same error

extent analysis

TL;DR

The issue can be mitigated by investigating the Partial Prerendering (PPR) configuration and handling of postponed state in the Next.js application.

Guidance

  • Verify the PPR configuration to ensure it is correctly set up for the el locale, as the issue only occurs with this locale.
  • Check the postponed state generation and parsing logic to identify potential issues with corrupted or incomplete compressed data.
  • Test the application with different locales to confirm if the issue is specific to the el locale.
  • Consider temporarily disabling PPR for the affected page to determine if it resolves the issue.

Example

No specific code snippet can be provided without further information, but reviewing the page.tsx file and the PPR configuration may help identify the root cause.

Notes

The issue seems to be related to the PPR feature in Next.js and the handling of postponed state, but more information is needed to provide a definitive solution. The fact that the issue only occurs with the el locale and not with en suggests a potential localization-related issue.

Recommendation

Apply a workaround by temporarily disabling PPR for the affected page or investigating the PPR configuration and postponed state handling to resolve the issue, as upgrading to a fixed version is not clearly implied in the provided information.

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