Breaking: #83284 - Removed EXT:backend/Resources/Private/Templates/Close.html 

See forge#83284

Description 

The file EXT:backend/Resources/Private/Templates/Close.html has been removed.

Impact 

Accessing the file EXT:backend/Resources/Private/Templates/Close.html will result in an empty string returned or an exception, depending on the code to access it.

Affected Installations 

All instances, that manually access this file or use the extensions doing this.. The extension scanner of the install tool will find affected extensions.

Migration 

Use the file EXT:backend/Resources/Public/Html/Close.html instead.