404 when navigating to layout route with loader() on Vercel

[styxlab]

Reproduction

Reproduction

Reproduction:
https://github.com/styxlab/link-404-on-vercel

Demo:
https://link-404-on-vercel.vercel.app/

Notes:

• This problem exists regardless of the lazyRouteDiscovery setting
• Everything works fine on local builds

Browser Console (client)

XHRGET
https://link-404-on-vercel.vercel.app/article.data
[HTTP/2 404  165ms]

TypeError: (intermediate value)() is null
    u https://link-404-on-vercel.vercel.app/assets/_layout-BSRGkq-d.js:1
    Vo https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:22
    zc https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    Pc https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    Sp https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    _c https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    k https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    V https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    EventHandlerNonNull* https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    <anonymous> https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
[components-CKeysXBM.js:121:487](https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js)
TypeError: (intermediate value)() is null
    u https://link-404-on-vercel.vercel.app/assets/_layout-BSRGkq-d.js:1
    Vo https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:22
    zc https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    Pc https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    wp https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    pl https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    oo https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    _c https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    k https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    V https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    EventHandlerNonNull* https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    <anonymous> https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
[components-CKeysXBM.js:121:487](https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js)
TypeError: (intermediate value)() is null
    u https://link-404-on-vercel.vercel.app/assets/_layout-BSRGkq-d.js:1
    Vo https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:22
    zc https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    Pc https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    wp https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    pl https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    oo https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    _c https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    k https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    V https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    EventHandlerNonNull* https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    <anonymous> https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
[components-CKeysXBM.js:24:161](https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js)
React Router caught the following error during render TypeError: (intermediate value)() is null
    u https://link-404-on-vercel.vercel.app/assets/_layout-BSRGkq-d.js:1
    Vo https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:22
    zc https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    Pc https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    wp https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    pl https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    oo https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    _c https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:24
    k https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    V https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    EventHandlerNonNull* https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
    <anonymous> https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:9
 
Object { componentStack: "\nu@https://link-404-on-vercel.vercel.app/assets/_layout-BSRGkq-d.js:1:159\nJn@https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js:20:3772\nba@https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js:20:7337\nv\nbody\nhtml\n_@https://link-404-on-vercel.vercel.app/assets/root-CeKJf3m4.js:10:1000\nJn@https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js:20:3772\n$n@https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js:20:2990\nbp@https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:33:5711\nwa@https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js:20:7466\nTh@https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:33:2895\nDh@https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:121:48\nB@https://link-404-on-vercel.vercel.app/assets/entry.client-XfJkZd__.js:19:1814" }
​
componentStack: "\nu@https://link-404-on-vercel.vercel.app/assets/_layout-BSRGkq-d.js:1:159\nJn@https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js:20:3772\nba@https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js:20:7337\nv\nbody\nhtml\n_@https://link-404-on-vercel.vercel.app/assets/root-CeKJf3m4.js:10:1000\nJn@https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js:20:3772\n$n@https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js:20:2990\nbp@https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:33:5711\nwa@https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js:20:7466\nTh@https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:33:2895\nDh@https://link-404-on-vercel.vercel.app/assets/components-CKeysXBM.js:121:48\nB@https://link-404-on-vercel.vercel.app/assets/entry.client-XfJkZd__.js:19:1814"
​
<prototype>: Object { … }
​​
__defineGetter__: function __defineGetter__()
​​
__defineSetter__: function __defineSetter__()
​​
__lookupGetter__: function __lookupGetter__()
​​
__lookupSetter__: function __lookupSetter__()
​​
__proto__: 
​​
constructor: function Object()
​​
hasOwnProperty: function hasOwnProperty()
​​
isPrototypeOf: function isPrototypeOf()
​​
propertyIsEnumerable: function propertyIsEnumerable()
​​
toLocaleString: function toLocaleString()
​​
toString: function toString()
​​
valueOf: function valueOf()
​​
<get __proto__()>: function __proto__()
​​
<set __proto__()>: function __proto__()
[index-ByXL_Fcl.js:20:3443](https://link-404-on-vercel.vercel.app/assets/index-ByXL_Fcl.js)

Server Logs

Error: No route matches URL "/article"
    at getInternalRouterError (/var/task/node_modules/@remix-run/router/dist/router.cjs.js:5228:59)
    at Object.query (/var/task/node_modules/@remix-run/router/dist/router.cjs.js:3807:19)
    at Object.singleFetchLoaders (/var/task/node_modules/@remix-run/server-runtime/dist/single-fetch.js:133:38)
    at handleSingleFetchRequest (/var/task/node_modules/@remix-run/server-runtime/dist/server.js:254:171)
    at requestHandler (/var/task/node_modules/@remix-run/server-runtime/dist/server.js:143:24)
    at Server.default (file:///var/task/build/server/edge-eyJydW50aW1lIjoiZWRnZSJ9/server-index.mjs:87:26)
    at /opt/rust/nodejs.js:16:5714
    at AsyncLocalStorage.run (node:internal/async_local_storage/async_hooks:91:14)
    at /opt/rust/nodejs.js:16:5702
    at AsyncLocalStorage.run (node:internal/async_local_storage/async_hooks:91:14)

System Info

remix 2.15.3, deployed to Vercel, node 22

Used Package Manager

npm

Expected Behavior

No 404 error when using a loader within the layout route

Actual Behavior

404 error when using a loader within the layout route on Vercel with changing runtimes

[styxlab]

Note: The 404 error vanishes when switching off both single fetch and lazyRouteDiscovery:

 v3_singleFetch: false,
 v3_lazyRouteDiscovery: false,