# Cypress v4.12.1 — Release & Upgrade Intelligence
- **Product:** Cypress (https://www.cypress.io)
- **Version:** v4.12.1
- **Released:** Aug 05, 2020
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/cypress/updates/v4.12.1/

## Executive Summary (TL;DR)
Cypress v4.12.1. Source highlight: The error `Cannot set property 'err' of undefined` will no longer incorrectly throw when rerunning tests in the Test Runner. Fixes #7874.

## Bug Fixes
- The error `Cannot set property 'err' of undefined` will no longer incorrectly throw when rerunning tests in the Test Runner. Fixes #7874.
- Skipping the last test before a nested suite with a `before` hook will now correctly run the tests in the suite following the skipped test. Fixes #8086.