Uncaught TypeError: Cannot read properties of undefined (reading 'replace')

[vzell]

On the release https://musicbrainz.org/release/6c8927ae-ca0b-4bd3-8c30-de11f9b737eb I get the following console message

helpers.js:119 Uncaught TypeError: Cannot read properties of undefined (reading 'replace')
(anonymous) @ userscript.html?name…3-ed8b9b41ed33:1261
XMLHttpRequest.send
main @ userscript.html?name…3-ed8b9b41ed33:1274
(anonymous) @ userscript.html?name…3-ed8b9b41ed33:1160
At @ VM414:10
(anonymous) @ userscript.html?name…9683-ed8b9b41ed33:1
window.__f__mt77lexf.hpk @ userscript.html?name…9683-ed8b9b41ed33:1
At @ VM414:10
r.setMessageListener.r @ VM414:91
(anonymous) @ VM414:94
_ @ VM414:22

The userscript points to mb-ALL-LINKS

[jesus2099]

I don't have this issue but I guess it must have to do with the new Verifying your browser put in place to try to counter the AI crawler attacks.
This wall is playing on an empty page, and most userscripts are not yet used to this.
I think userscripts should be adapted to handle this anti-AI empty page, but it's hard to test, as it happens only on first loading, usually.

[jesus2099]

@vzell could you tell me what version of ALL LINKS you have?
I could load, by chance, this page while getting the Verifying your browser loader.

But ALL LINKS v2026.8.23 did not have any loading issues (no console errors), and it was completely run on the final page.

The scripts that issued errors were:

• COLLECTION HIGHLIGHTER v2026.7.19 (line 391)
  • Uncaught TypeError: Failed to execute 'observe' on 'MutationObserver': parameter 1 is not of type 'Node'.
• MASS MERGE RECORDINGS (line 523)
  • Local title (/^(?:.+?[„“«‘] ?(.+) ?[“”»’] \S+ (.+?)|(.+?)のリリース(?:グループ)?「(.+)」) - MusicBrainz$/) not found in document.title (Verifying your browser).
• INLINE STUFF v2026.4.9 (line 404)
  • Uncaught TypeError: Cannot read properties of null (reading 'textContent')

And other scripts (not mine):

• mb.unicodechars v0.10.5 (line 376)
  • Uncaught ReferenceError: $ is not defined
• Compare AcoustIDs easier! v2024.10.13 (line 91)
  • Uncaught ReferenceError: $ is not defined
• Inline all recording's tracks on releases v2025.5.3 (line 137)
  • Uncaught TypeError: Cannot convert undefined or null to object
• Mark recordings as video v2021.10.30 (line 774)
  • Uncaught TypeError: Cannot read properties of null (reading 'insertAdjacentHTML')
• Set recording comments for a release v2026.8.23.1 (line 53)
  • Uncaught ReferenceError: $ is not defined

And apparently, all these usersripts ended up successfully loaded and functional on the final page.
So maybe it's not worth fixing those errors.