I am getting this error in the log file of the server
PHP Fatal error: Uncaught Error: Call to undefined method IndexController::registerStylesheet() in /home/voaydkl2p226/public_html/epay/modules/ps_imageslider/ps_imageslider.php:530
Stack trace:
#0 /home/voaydkl2p226/public_html/epay/classes/Hook.php(924): Ps_ImageSlider->hookdisplayHeader(Array)
#1 /home/voaydkl2p226/public_html/epay/classes/Hook.php(328): HookCore::coreCallHook(Object(Ps_ImageSlider), 'hookdisplayHead...', Array)
#2 /home/voaydkl2p226/public_html/epay/classes/Hook.php(860): HookCore::callHookOn(Object(Ps_ImageSlider), 'displayHeader', Array)
#3 /home/voaydkl2p226/public_html/epay/classes/controller/FrontController.php(579): HookCore::exec('displayHeader')
#4 /home/voaydkl2p226/public_html/epay/controllers/front/IndexController.php(37): FrontControllerCore->initContent()
#5 /home/voaydkl2p226/public_html/epay/classes/controller/Controller.php(255): IndexControllerCore->initContent()
#6 /home/voaydkl2p226/public_html/epay/classes/Dispatcher.php(428): ControllerCore->run()
#7 /home/voaydkl2p226/public_html/epay in /home/voaydkl2p226/public_html/epay/modules/ps_imageslider/ps_imageslider.php on line 530
Kindly help