NB:I create this ticket since I did not manage to apply the translation. Please dig on this.

Steps to reproduce:

Install translation package

composer require ezplatform-i18n/ezplatform-i18n-fr_fr

Create a folder anywhere and try to add a new location of this folder wher it already exists

For instance: create a folder below Media and try to select Media folder as new location. You will get this error message: 

Argument '$locationCreateStruct' is invalid: Content is already below the specified parent

This error message is not translated but it is already in i18n package.

ezplatform-i18n-fr_FR/repository_exceptions.fr.xlf at master · ezplatform-i18n/ezplatform-i18n-fr_FR · GitHub

Expected behavior:

Translation should be working.