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Duplicate LanguageBranches for same content cause site startup failure

Found in

EPiServer.CMS.Core 12.18.0

Fixed in

EPiServer.CMS.Core 12.19.1

Created

Sep 21, 2023

Updated

Oct 20, 2023

Area

CMS Core

State

Closed, Fixed and tested


Description

Fixed an issue that cause a site failure if you had two LanguageBranches yi and yid which both resolved to same CultureInfo.Name ('yi'). The exception said, The source argument contains duplicate keys.