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 [internal function]: ControllerExtensionMyocOptionDiscount->displayOptionDiscount('product/product', Array, '') #1 /home/jannat/ocartdata/storage/modification/system/engine/action.php(79): call_user_func_array(Array, Array) #2 /home/jannat/ocartdata/storage/modification/system/engine/event.php(67): Action->execute(Object(Registry), Array) #3 /home/jannat/ocartdata/storage/modification/system/engine/loader.php(121): Event->trigger('view/product/pr...', Array) #4 /home/jannat/ocartdata/storage/modification/catalog/controller/product/product.php(822): Loader->view('product/product', Array) #5 [internal function]: ControllerProductProduct->index() #6 /home/jannat/ocartdata/storage/modification/system/engine/action.php(79): call_user_func_array(Array, Array) #7 /home/jannat/ocartdata/storage/modification/catalog/controller/startup/router. in /home/jannat/public_html/catalog/controller/extension/myoc/option_discount.php on line 21