Fatal error: Uncaught Error: Call to a member function getOptionDiscountSettings() on null in /home/jannat/public_html/catalog/controller/extension/myoc/option_discount.php:21 Stack trace: #0 /home/jannat/ocartdata/storage/modification/system/engine/action.php(79): ControllerExtensionMyocOptionDiscount->displayOptionDiscount('product/product', Array, '') #1 /home/jannat/ocartdata/storage/modification/system/engine/event.php(67): Action->execute(Object(Registry), Array) #2 /home/jannat/ocartdata/storage/modification/system/engine/loader.php(121): Event->trigger('view/product/pr...', Array) #3 /home/jannat/ocartdata/storage/modification/catalog/controller/product/product.php(822): Loader->view('product/product', Array) #4 /home/jannat/ocartdata/storage/modification/system/engine/action.php(79): ControllerProductProduct->index() #5 /home/jannat/ocartdata/storage/modification/catalog/controller/startup/router.php(38): Action->execute(Object(Registry)) #6 /home/jannat/ocartdata/storage/modification/system/engine/action.php(79) in /home/jannat/public_html/catalog/controller/extension/myoc/option_discount.php on line 21