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` ### Current vs. Expected behavior correct: `` ### Provide environment information ```bash Next.js 16.1.6 ``` ### Which area(s) are affected? (Select all that apply) CSS ### Which stage(s) are affected? (Select all that apply) next dev (local) ### Additional context _No response_","inLanguage":"en-US","datePublished":"2026-03-05T04:24:44Z","dateModified":"2026-03-05T04:24:44Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.stepcodex.com/en/issue/main-app-css-render-error"},"author":{"@type":"Person","name":"zuojj","url":"https://github.com/zuojj","image":"https://github.com/zuojj"},"publisher":{"@type":"Organization","name":"StepCodex","url":"https://www.stepcodex.com"},"articleSection":"nextjs","about":[{"@type":"Thing","name":"nextjs","url":"https://www.stepcodex.com/en/category/nextjs"}],"contributor":[{"@type":"Person","name":"github-actions[bot]","url":"https://github.com/github-actions%5Bbot%5D","image":"https://github.com/github-actions%5Bbot%5D"}],"keywords":"main-app.css render error, nextjs, how to fix, fix, troubleshooting, root cause, solution, StepCodex","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/LikeAction","userInteractionCount":3}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.stepcodex.com/en/issue"},{"@type":"ListItem","position":2,"name":"nextjs","item":"https://www.stepcodex.com/en/category/nextjs"},{"@type":"ListItem","position":3,"name":"main-app.css render error","item":"https://www.stepcodex.com/en/issue/main-app-css-render-error"}]}]
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nextjs - 💡(How to fix) Fix main-app.css render error [1 comments, 2 participants]

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vercel/next.js#90911•Fetched 2026-04-08 00:19:13
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Code Example

Next.js 16.1.6
RAW_BUFFERClick to expand / collapse

Link to the code that reproduces this issue

https://github.com/vercel/next.js/blob/286a73f84a516b06df59c2e5524150c4ad5d47d6/packages/next/src/server/app-render/required-scripts.tsx#L68

To Reproduce

main-app.css is rendered： <script src="_next/static/css/main-app.css" async="" crossorigin=""></script>

Current vs. Expected behavior

correct: <link href="_next/static/css/main-app.css" />

Provide environment information

Next.js 16.1.6

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

CSS

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

next dev (local)

Additional context

No response

extent analysis

Fix: Render CSS as <link> instead of <script>

The bug is in required-scripts.tsx – it treats any file that ends with .css as a “script” and emits <script …> tags.
Patch the component (or upgrade to a version where the fix is merged) so that .css files are emitted as <link rel="stylesheet">.

1️⃣ Quick fix – patch the file locally

  1. Create a patch (e.g. using patch-package).
# Install patch‑package if you don’t have it

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#api#ssr#installation#tensor shape#autograd error#orchestration issue#cache issue#memory leak#API versioning#request timeout

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nextjs - 💡(How to fix) Fix main-app.css render error [1 comments, 2 participants]