Shopify Liquid errors · Unknown filter
Fix “unknown filter” errors in Shopify Liquid
The filter at that line is not a Shopify Liquid filter. Usually a typo, a filter from another platform, or a Shopify filter used with the wrong name (money_format instead of money).
Liquid error (sections/main-product line 40): unknown filter 'money_format'
Paste your version of the error
The file, line, and name in your error are turned into exact steps.
How to fix it in Shopify
- In Shopify admin open Online Store, then Themes. On the theme that shows the error choose the three-dot menu, then Edit code. If that is your live theme, duplicate it first and fix the copy.
- Open the file and line. Check the filter name against Shopify's Liquid filter reference and correct it.
- If the filter came from code for another platform, replace the whole expression with the Shopify equivalent or remove it.
- Save and reload.
Fix it without touching your live theme
Add Shop Buddy to Claude or ChatGPT and paste the error there. It finds the line in your actual theme, makes the fix on a private copy, shows you before-and-after screenshots, and publishes only when you tap. Roll back with one tap.
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