Liquid syntax error: Unknown tag 'schema' in theme app extension blocks – how long will Shopify take to fix this?

Topic summary

New Liquid error encountered during local development: “Unknown tag ‘schema’” when using theme app extension blocks. This blocks running a Shopify app locally. Liquid is Shopify’s templating language; the ‘schema’ tag defines settings/metadata for theme app extension blocks.

  • Evidence: A screenshot is attached showing the error message (image central to understanding the issue).
  • Impact: Local development appears broken for theme app extension blocks due to the tag not being recognized.
  • Request: The poster asks how long Shopify will take to fix the problem (seeking an ETA).

Status: No fixes, workarounds, or official responses are provided in the thread yet. The discussion is open with the key question—Shopify’s timeline for a fix—unanswered.

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


Facing a new error today while running Shopify app locally :unamused_face:

“Does anyone know how much time Shopify will take to fix this issue?”:thinking:

Check this post for updates

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