Getting a white screen of death on production builds, erratically #38557

robations · 2023-09-18T11:21:49Z

robations
Sep 18, 2023

I'm pretty sure this is a bug, but without any way to reliably reproduce the issue (for a start, we'd need to make a copy of Wordpress and generate a load of fake content) it might be more useful as a discussion.

We have a Gatsby site that rebuilds every morning, sourcing content from Wordpress, but recently (and at some point in the past) it sometimes substitutes the development index.html over the built version. Having downloaded a copy of the site from Netlify, it seems like all the other files have built correctly, just that the index file is wrong.

I would assume that a production build would never try to copy the development index.html, so I find this rather confusing.

Just in case this isn't clear, we get this at the root of the site:

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
        <meta http-equiv="x-ua-compatible" content="ie=edge" />
        <meta
            name="viewport"
            content="minimum-scale=1, initial-scale=1, width=device-width"
        />
        <meta name="note" content="environment=development" />
        <link
            rel="sitemap"
            type="application/xml"
            href="/sitemap/sitemap-index.xml"
        />
        <script src="/socket.io/socket.io.js"></script>
    </head>

    <body>
        <div id="___gatsby"></div>
        <script src="/polyfill.js" nomodule=""></script>
        <script src="/commons.js"></script>
    </body>
</html>

This seems like a very binary thing to go wrong, so what code path during the build could possibly lead to this? Any ideas how to debug this, or where to start looking in the Gatsby codebase?

PS the build command is gatsby clean && gatsby build so this issue is with a cache clear.

(Gatsby v5, building on Netlify with latest @netlify/plugin-gatsby)

Keywords: empty page, WSOD

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Getting a white screen of death on production builds, erratically #38557

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Getting a white screen of death on production builds, erratically #38557

robations Sep 18, 2023

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robations
Sep 18, 2023