Warning (2): Trying to access array offset on value of type null [CORE/cake/libs/cache.php, line 199]

                $settings = array_merge($_this->__config[$_this->__name], $settings);
            }
            $_this->_Engine[$engine]->init($settings);

Cache::set() - CORE/cake/libs/cache.php, line 199
Cache::read() - CORE/cake/libs/cache.php, line 281
include - APP/config/bootstrap.php, line 302
Configure::__loadBootstrap() - CORE/cake/libs/configure.php, line 659
Configure::getInstance() - CORE/cake/libs/configure.php, line 137
include - CORE/cake/bootstrap.php, line 49
[main] - APP/webroot/index.php, line 92

Fatal error: Uncaught Error: Call to a member function init() on null in /home/cuponclu/public_html/core/cake/libs/cache.php:199 Stack trace: #0 /home/cuponclu/public_html/core/cake/libs/cache.php(281): Cache::set(Array) #1 /home/cuponclu/public_html/app/config/bootstrap.php(302): Cache::read('site.default_ci...', 'long') #2 /home/cuponclu/public_html/core/cake/libs/configure.php(659): include('/home/cuponclu/...') #3 /home/cuponclu/public_html/core/cake/libs/configure.php(137): Configure->__loadBootstrap(true) #4 /home/cuponclu/public_html/core/cake/bootstrap.php(49): Configure::getInstance() #5 /home/cuponclu/public_html/app/webroot/index.php(92): include('/home/cuponclu/...') #6 {main} thrown in /home/cuponclu/public_html/core/cake/libs/cache.php on line 199