Remix app extension block that was working fine earlier but has suddenly started throwing an error

Shopify Apps

Topic summary

Issue: A Shopify Remix app extension block (store-locator.liquid) using a {% schema %} stopped working without code changes. The block either disappears from the Theme Editor or throws a schema/Liquid parsing error. App remains installed, extension deployed, paths correct, and redeploying didn’t help. A screenshot shows the schema-related error.

Questions: Whether a recent Shopify or CLI update introduced new validations/restrictions on {% schema %}, and how best to debug schema issues in the Theme Editor.

Recent update: A respondent notes many developers are seeing the same failure and suggests Shopify likely introduced a platform-side issue. They provide a community thread link indicating it’s widespread and advise waiting for Shopify to resolve it.

Status/outcome: No confirmed workaround or fix shared. The problem appears to be a Shopify incident rather than app-specific, with resolution pending on Shopify’s side. Discussion remains open.

Summarized with AI on December 16. AI used: gpt-5.
1

Hi @Everyone I’m facing an issue with a Shopify Remix app extension block that was working fine earlier but has suddenly started throwing an error.

I have a file at extension/blocks/store-locator.liquid where I’m using a {% schema %} to define the block title and other settings so the app block can be enabled and configured from the Theme Customizer. This was working correctly before and the block was visible and configurable in the theme editor.

Recently, without any major changes to the block code, it started giving a schema-related error. The block either no longer appears in the theme customization panel or throws an error related to the schema or Liquid parsing. The app is still installed, the extension is deployed, and the file path is correct. I’ve also tried redeploying the app extension, but the issue still persists.

I wanted to check if anyone else has encountered a similar issue recently. Is it possible that a recent Shopify update or Shopify CLI change affected app block schemas in Remix apps? Are there any new restrictions or validations for {% schema %} in app extension blocks? Also, what is the best way to debug schema-related issues for app blocks in the theme editor?

Any help or suggestions would be greatly appreciated. Thanks in advance.

Screenshot 2025-12-16 124400
Screenshot 2025-12-16 1244001233×658 63 KB

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Hey @aravinthemb

Many people are facing the same issue, wait for a while and it will automatically get resolved since it looks like Shopify broke something.

Best,
Moeed

1 Like