> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zapier.com/llms.txt
> Use this file to discover all available pages before exploring further.

# What's changed in v17.3.1

> Regression bug fixes with `zapier build`.

*Released: 2025-07-17*

## cli

* 🐛 Fix regression bugs with `zapier build --skip-npm-install`, where:
  * it can miss local packages files when building in a Lerna monorepo ([#1068](https://github.com/zapier/zapier-platform/pull/1068))
  * it can fail with "Configuration property ... is not defined" when [config](https://www.npmjs.com/package/config) package is used ([#1071](https://github.com/zapier/zapier-platform/pull/1071))
* 💅 Improve some error messages in `zapier build` ([#1070](https://github.com/zapier/zapier-platform/pull/1070))

## core

* 💅 Improve the error message when the app module fails to import ([#1070](https://github.com/zapier/zapier-platform/pull/1070))

## schema

None!