Breaking: #72022 - Removed class loading fallback in cObject¶
See Issue #72022
ContentObjectRenderer->isClassAvailable() was used internally to check for a TypoScript property
plugin.tx_myextension_pi1.includeLibs that included a PHP file when
With TYPO3 CMS 7, the spl_autoload mechanism checks for all places within extensions, alternatively composer does this on build-time. All needed classes are known, making this check and the option obsolete.
The functionality was introduced in TYPO3 4.3 before autoloading was available, and has now been removed.
.includeLibs on a plugin TypoScript object has no effect anymore.