Breaking: #73763 - Removed backPath from PageRenderer

See Issue #73763

Description

The PageRenderer class responsible for rendering Frontend output and Backend modules has no option to resolve the so-called backPath anymore. The second parameter has been dropped from the constructor method. Additionally the public property backPath as well as the method PageRenderer->setBackPath() have been removed.

Impact

Calling the constructor of PageRenderer with a second parameter, or setting PageRenderer->backPath has no effect anymore. Calling PageRenderer->setBackPath() directly will result in a PHP error.

Affected Installations

Custom installations using the PageRenderer API directly in an extension.

Migration

Simply remove the call to PageRenderer->setBackPath() in your own scripts.