Fatal error: Cannot use 'String' as class name as it is reserved in /home/conasa/public_html/lib/Cake/Utility/String.php on line 24

Fatal error: During inheritance of ArrayAccess: Uncaught Error: Class "String" not found in /home/conasa/public_html/lib/Cake/Utility/Debugger.php:340 Stack trace: #0 /home/conasa/public_html/lib/Cake/Utility/Debugger.php(742): Debugger::trace(Array) #1 /home/conasa/public_html/lib/Cake/Error/ErrorHandler.php(229): Debugger->outputError(Array) #2 /home/conasa/public_html/lib/Cake/Network/CakeRequest.php(30): ErrorHandler::handleError(8192, 'Return type of ...', '/home/conasa/pu...', 1026) #3 /home/conasa/public_html/lib/Cake/Core/App.php(567): include('/home/conasa/pu...') #4 /home/conasa/public_html/lib/Cake/Error/ExceptionRenderer.php(144): App::load('CakeRequest') #5 /home/conasa/public_html/lib/Cake/Error/ExceptionRenderer.php(92): ExceptionRenderer->_getController(Object(FatalErrorException)) #6 /home/conasa/public_html/lib/Cake/Error/ErrorHandler.php(126): ExceptionRenderer->__construct(Object(FatalErrorException)) #7 /home/conasa/public_html/lib/Cake/Error/ErrorHandler.php(274): ErrorHandler::handleException(Object(FatalErrorException)) #8 /home/conasa/public_html/lib/Cake/Error/ErrorHandler.php(213): ErrorHandler::handleFatalError(64, 'Cannot use 'Str...', '/home/conasa/pu...', 24) #9 /home/conasa/public_html/lib/Cake/Core/App.php(931): ErrorHandler::handleError(64, 'Cannot use 'Str...', '/home/conasa/pu...', 24, Array) #10 /home/conasa/public_html/lib/Cake/Core/App.php(904): App::_checkFatalError() #11 [internal function]: App::shutdown() #12 {main} in /home/conasa/public_html/lib/Cake/Network/CakeRequest.php on line 30