Uncaught TypeError: this._each is not a function

[pjw345]

Preconditions and environment

• Magento 2.4.7-p2
• New Relic agents installed (not using Magento NewRelic modules)

Steps to reproduce

1. Navigate to Dashboard (adminhtml)
2. check console log

Expected result

Expect no console errors logged

Actual result

Lots of errors logged repeatedly:
legacy-build.min.js:1 Uncaught TypeError: this._each is not a function
at e (legacy-build.min.js:1:14513)
at nr-spa-1.267.0.min.js:2:81604
at Array.forEach ()
at y.ce [as onFinished] (nr-spa-1.267.0.min.js:2:81583)
at y.finish (nr-spa-1.267.0.min.js:2:76545)
at nr-spa-1.267.0.min.js:2:76118

Additional information

This is related to legacy-build.min.js which is released with Magento 2.4.7-p2. If the file is replaced by the version released by Magento 2.4.7-p1 the error goes away.

See also issue logged on New Relic github:
newrelic/newrelic-browser-agent#1201

Release note

No response

Triage and priority

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

Hi @pjw345. Thank you for your report.
To speed up processing of this issue, make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce.

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[pisicabogdan]

Same error on Magento 2.4.6-p6

[mrafyq]

Same error on Magento 2.4.5-p10

[usuyukiso]

reproduced for me on 2.4.7-p3. It is only reproduced with New Relic installed.

[MagePsycho]

Same issue on Magento 2.4.5-p2.
It is only reproduced with New Relic installed.
Got it fixed by using the legacy-build js file from Magento 2.4.7-p1 (still yet to check it's consequences)

[bbrigagao]

I saw this error after updating projects to the bulletin APSB24-61 on projects with New Relic configured.

If you guys check the release notes there was a fix on prototype js scripts (I don't know if could be related to this).

There are 3 types of New Relic accounts and the script will be injected according to your account:

Lite - https://js-agent.newrelic.com/nr-rum-1.267.0.min.js
Pro - https://js-agent.newrelic.com/nr-full-1.267.0.min.js
SPA (pro + spa) - https://js-agent.newrelic.com/nr-spa-1.267.0.min.js

I saw this error only happens on projects that have SPA accounts, perhaps it could be an incompatibility with this SPA script.

[pjw345]

I've checked the bulletin and have not seen anything regarding legacy-build.min.js.

https://helpx.adobe.com/security/products/magento/apsb24-61.html

@bbrigagao can you remember where you read that or did I miss it?

[pisicabogdan]

Again, same error on Magento 2.4.6-p7 (last week upgraded from 2.4.6-p6).

[bbrigagao]

@pjw345 I found that the legacy-build.min.js is related to prototype js on this issue.
So, I suspected that could be related to this since on bulletin APSB24-61 there was a fix on prototype js scripts.

[scadox]

Hi Adobe Commerce Support, same problem with Magento (2.4.7-p3) and not have problem with preview (2.4.7-p2) hosted in Magento Cloud.

Where i have this problem in Admin Panel :

• Catalog / Add product, Edit Product
• Catalog / Categories
• Sales / Orders, Invoices, ..
• Content / Edit Page CMS, Block CMS
• Stores / Configuration

Uncaught TypeError: this._each is not a function at e (legacy-build.min.js:1:14513) at nr-spa-1.268.0.min.js:2:83492 at Array.forEach (<anonymous>) at y.ce [as onFinished] (nr-spa-1.268.0.min.js:2:83471) at b.finish (nr-spa-1.268.0.min.js:2:78433) at nr-spa-1.268.0.min.js:2:78006

File from vendor lib (legacy-build.min.js) = [...] var Enumerable = (function() { function e(E, D) { try { this._each(E, D) [...]

Cordialement,
Matthew Lafrance

[MagePsycho]

I believe the issue can be resolved by fixing the legacy-build.min.js file directly. According to this ticket - newrelic/newrelic-browser-agent#1201, it appears that the legacy JavaScript is overriding Object.values(), which is causing the problem.

Please let us know if the Magento team or any of you have identified a permanent fix.