[nuxt] [request error] [unhandled] [500] File URL path must not include encoded / characters

[KosyoK1104]

What version of Bun is running?

1.2.0+b0c5a7655

What platform is your computer?

Darwin 24.1.0 arm64 arm

What steps can reproduce the bug?

After upgrading to Bun 1.2, I tried installing clean Nuxt application using this guide: https://bun.sh/guides/ecosystem/nuxt.

After installing everything, I've ran this command:

bun --bun run dev

And tried opening the application, but I was given Error 500 and also in the logs was written:

[nuxt] [request error] [unhandled] [500] File URL path must not include encoded / characters

I tried running this command:

bun run dev

And it works normally.

What is the expected behavior?

No response

What do you see instead?

No response

Additional information

No response

[seh-GAH-toh]

Same on Fedora 41, error happens in v1.2.0, work fine in v1.1.45

[ghost]

Same on Ubuntu 24.04 (x64)

[techitwinner]

Same on Windows 11 24H2 (26100.2894)
Bun version: 1.2.0

[yakir-reznik]

I'm getting the same issue.
When i run "bun run dev" everything works fine.
When i run "bun --bun run dev" I'm getting an error: "[nuxt] [request error] [unhandled] [500] File URL path must not include encoded / characters".

The api routes seem to work fine "/api/hello.ts", the frontend routes are the ones that cause the error. ("/", "/about", ...)

Bun version: 1.2.0
OS: MacOS Sonoma 14.5 (Intel)

[rukshn]

Same issue in Mac Book Air M1, Sequoia 15.1
Bun Version: 1.2.0

[GamerGirlandCo]

same issue. downgrading nuxt to the latest 3.14.x made the error go away, so it's probably a nuxt problem

[Jarred-Sumner]

@DonIsaac this is a regression from adding the node:url tests in #16404

The following example input is throwing an error, and it is valid input that works in Node:

file:///private/tmp/my-nuxt-app/node_modules/nitropack/dist/presets/firebase/runtime/firebase-gen-%7B%7B%20firebase.gen%20%7D%7D'

[27rogi]

Seems like Nuxt 3.15.3 with Nitro 2.10.4 on Bun 1.2.1-canary.48+68ee83067 still has error ERROR [nuxt] [request error] [unhandled] [500] File URL path must not include encoded \ or / characters. Running on Windows 11 24H2.

[ghost]

Not solved for me on latest canary either 😦

[paperclover]

first obvservation is this file url to path function is being called a ton.

[isaacR23]

same issue on plain app:
`- Operating System: Darwin

• Node Version: v23.1.0
• Nuxt Version: 3.15.3
• CLI Version: 3.20.0
• Nitro Version: 2.10.4
• Package Manager: [email protected]
• Builder: -
• User Config: compatibilityDate, devtools, modules, vite
• Runtime Modules: @nuxtjs/[email protected]
• Build Modules: -`

[asphum]

ssr: false = is work.

[paperclover]

the bug is in pathToFileURL

[GamerGirlandCo]

i have a couple patches for vite-node (the package calling fileURLToPath) in the interim.

these patches make sure to url decode any module urls containing "virtual:nuxt:" before passing them to fileURLToPath.

[email protected]
[email protected]

[paperclover]

thank you for the interim patch. the escaping logic will be fixed in #16851