Wishlist error during upgrade to Adobe Commerce versions 2.3.4-p1 or 2.3.5

This article provides a fix for the known issue when upgrading to Adobe Commerce versions 2.3.4-p1 and 2.3.5 related to a wishlist error during the upgrade to these versions.

Affected products and versions

Issue

When upgrading your Adobe Commerce (all deployment methods) and Magento Open Source to version 2.3.5 or 2.3.4-p1, you could get a wishlist error (detailed below) from the module:

Magento_Wishlist

Upgrading from Adobe Commerce (all deployment methods)/Magneto Open Source version 2.3.4-p1 to version 2.3.4-p2 or from Adobe Commerce (all deployment methods)/Magneto Open Source version 2.3.5 to version 2.3.5-p1 will fix the error.

Steps to reproduce:

Upgrade your Adobe Commerce (all deployment methods)/Magento Open Source to version 2.3.4-p1 or 2.3.5.

Expected result:

The upgrade process to Adobe Commerce (all deployment methods)/Magento Open Source version 2.3.4-p1 or 2.3.5 completes normally.

Actual result:

During the upgrade, you get this error:

Module ‘Magento_Wishlist’:

Unable to apply data patch Magento\Wishlist\Setup\Patch\Data\CleanUpData for module Magento_Wishlist. Original exception message: Unable to unserialize value. Error: Syntax error

Solutions

Related reading

In our developer documentation: