useBlocker breaks navigation on 404 page

[rothsandro]

Which project does this relate to?

Router

Describe the bug

If the user visits a non-existing page and the app uses a useBlocker() hook, the user can't navigate away from the page anymore. Clicking on a valid link will just throw an error Error: No route found for location /foo (with /foo being the 404 url).

Uncaught (in promise) Error: No route found for location /foo
    at getLocation
    at Object.blockerFnComposed [as blockerFn]
    at tryNavigation 
    at Object.push
    at RouterCore.commitLocation 
    at RouterCore.buildAndCommitLocation 
    at RouterCore.navigate 
    at handleClick 
    at chunk-ZMTB2JSC.js?v=c5950115:916:5
    at Array.forEach (<anonymous>)

Your Example Website or App

https://stackblitz.com/edit/github-jxfdqrcu?file=src%2Fmain.tsx

Steps to Reproduce the Bug or Issue

1. Open the repro
2. Append "/foo" to the preview URL to get the "Not found" error
3. Click on "Home" or "About"

=> Navigation doesn't work, there's an error in the console.

Expected behavior

As a user, I expected that navigation is triggered but it's not.

Screenshots or Videos

No response

Platform

• Router / Start Version: Router 1.130.12
• OS: macOS
• Browser: Brave
• Browser Version: 1.81.131
• Bundler: Vite
• Bundler Version: 6.3.5

Additional context

No response

[jiji-hoon96]

I did a quick test and made some improvements. If you're not working on it, would it be okay to submit a PR?

[rothsandro]

@jiji-hoon96 I'm not working on this, go for it 🚀