Gutenberg 16.9/CoBlocks/ETK conflict: "The page-patterns plugin has encountered an error"

[liviopv]

Quick summary

After Gutenberg 16.9, Atomic sites are experiencing a bug where ETK's pattern selection modal will not display when creating a new page, triggering a The "page-patterns" plugin has encountered an error and cannot be rendered. error message.

It only happens when the 3 plugins are active: Gutenberg, CoBlocks, ETK. Disabling either one of the makes the error go away:

Steps to reproduce

1. On an Atomic site, activate Gutenberg 16.9, WordPress.com Editing Toolkit, CoBlocks
2. Go to Pages > Add new
3. The pattern selector modal will not load and "The page-patterns plugin has encountered an error" will be shown at the top of the editor canvas.

What you expected to happen

The pattern selection modal should load correctly when loading new pages if ETK is active, no matter what other plugins are active.

What actually happened

The "page-patterns" plugin has encountered an error and cannot be rendered.

Impact

Some (< 50%)

Available workarounds?

Yes, difficult to implement

Platform (Simple and/or Atomic)

Atomic

Logs or notes

Chrome 118, Mac Sonoma Gutenberg 16.9 CoBlocks 3.1.4 ETK 4.2070

[cuemarie]

📌 REPRODUCTION RESULTS

• Tested on Atomic – Replicated

📌 FINDINGS/SCREENSHOTS/VIDEO Replicated as described. My browser console shows the following error:

Source map error: Error: request failed with status 404
Resource URL: https://atbugtesting.work/wp-content/plugins/full-site-editing/starter-page-templates/dist/starter-page-templates.min.js?ver=1698692271
Source Map URL: starter-page-templates.min.js.map

📌 ACTIONS

• Triaged

[Gustavo-Hilario]

More reports here:

• [ ] 7310862-zen
• [ ] 7297135-zen

[github-actions[bot]]

Support References

This comment is automatically generated. Please do not edit it.

• [ ] 7310862-zen
• [ ] 7297135-zen
• [ ] 7251943-zen
• [ ] 7341396-zen
• [ ] 7341532-zen
• [ ] 7360857-zen
• [ ] 7378575-zen
• [ ] 7551741-zen
• [ ] 8590650-zen
• [ ] 8597032-zen
• [ ] 8597050-zen
• [ ] 8827620-zen
• [ ] 8934305-zen
• [ ] pbxlJb-6ay-p2#comment-3905

[silvio-meter]

Reported here:

• [ ] 7251943-zen

[pauljacobson]

Al reported here: 7341396-zen with a follow-up here: 7341532-zen

[ariel-maidana]

7360857-zd-a8c Deactivating Coblocks solved it.

[janmckell]

7378575-zd-a8c Deactivating Coblocks solved it.

[nazilya06]

7551741-zd-a8c

User reported the same error. They had CoBlocks and ETK active on their site. I have tried deactivating these plugins; however, it affected the appearance of the site.

Installing and activating Gutenberg resolved the issue.

[krutidugade]

Reported here 8590650-zd-a8c. They didn't have Gutenberg, CoBlocks and ETK active. Installing and activating Gutenberg solved the issue.

[hanananah]

8597032-zen

CoBlocks, Gutenberg, and ETK were inactive on the site. Activating Gutenberg did not resolve the issue. Activating ETK resolved the issue, even with Gutenberg inactive.

[hanananah]

8597050-zen

Gutenberg was active on the site, but CoBlocks and ETK were inactive. Activating ETK resolved the issue.

[donalirl]

#8827620-zen Gutenberg plugin active, no Coblocks or ETK.

[davemart-in]

@obenland what do we want to do with this one? I don't think we support Coblocks anymore, but it looks like if people have Gutenberg enabled without ETK it creates issues. This seems to be on-going, but doesn't seem to affect a lot of customers.

I bring this up with you because I'm not sure it will be resolved by anyone on groundskeeper rotation.

[desnum]

Here's a case where the message showed up on a simple (no plugins) site: 8934305-zd

[obenland]

@Copons @dsas Could T-Rex take a look at this issue?

[dsas]

I'll take a look.

Given that ETK has been completely removed (pbxlJb-6ay-p2#comment-3905), I'll assume that reports where this happens without ETK are to be expected, from some of the reports above it's unclear that coblocks is related.

[dsas]

The "page-patterns" plugin has encountered an error and cannot be rendered.

This is a very generic message that will occur whenever the plugin breaks in some way. This is quite probably several problems dressed up in a trenchcoat.

It looks as though @arthur791004 might have fixed one of these problems in https://github.com/Automattic/jetpack/pull/38823 on 2024-08-12, which was probably a big cause of reports. We've had two further reports since then though.

The plugin is being developed at https://github.com/Automattic/jetpack/tree/trunk/projects/packages/jetpack-mu-wpcom/src/features/starter-page-templates

[dsas]

I've tried reproducing this problem using the two tickets reported since Arthur's fix.

#8827620-zd-a8c

I can't reproduce on this site, I tried using Chrome.

8934305-zd-a8c

I can't reproduce on this site. I tried using Safari as I could see in the screenshot that's what the user used. @desnum also couldn't reproduce while working on the ticket.

---

As I said yesterday, this is a very generic message that just means page-patterns broke in some way. I don't think we should be prioritising this issue solely based upon the interaction count. A whole bunch of those were almost certainly resolved by Arthur's fix in August.

That said, depending upon how widespread these errors are, they might be logged into Sentry. I'll take a look to see if I can find anything.

[dsas]

I can't find anything logged by either of those users, or on either of the two URLs mentioned. This is not unexpected - we only sample some errors afaik. I've had a general poke around Sentry and haven't found anything obviously relevant either.

I'm going to close this bug - not because it's fixed for everyone, but because this bug report doesn't contain anything useful for the people it's not fixed for, and for how many people are still experiencing the problem.

For searchers finding this issue in future, please create a new issue with reproduction steps, feel free to ping me.