Hello,

It seems the modifications for the BurnEngine extensions may be correlated to the
problem of OpenCart not being able to process as complete and notifying customers of their orders. Or could it be the payment extension installation? Or from other sources?

Please advise.

Thanks!

The order could not be completed normally due to the following error:

Fatal error: ‘Call to a member function check() on null‘
in /home/user/public_html/system/storage/modification/catalog/model/checkout/order.php:267
Stack trace:
#0 system/storage/modification/system/engine/loader.php(207): ModelCheckoutOrder->addOrderHistory(’57′, ’5′)
#1 system/engine/proxy.php(25): Loader->{closure}(Array, Array)
#2 catalog/controller/payment/braintree.php(733): Proxy->__call(‘addOrderHistory’, Array)
#3 system/storage/modification/system/engine/action.php(51): ControllerPaymentBraintree->completeOrder()
#4 catalog/controller/startup/router.php(25): Action->execute(Object(Registry))
#5 system/storage/modification/system/engine/action.php(51): ControllerStartupRouter->index()
#6 system/storage/modification/system/engine/front.php(37): Action->execute(Object(Registry))
#7 system/storage/modification/system/engine/front.php(32): Front->execute(Object(Action))
#8 system/framework.php(103): Front->dispatch(Object(Action), Object(Action))
#9 system/startup.php(124): require_once(‘/home/user…’)
#10 index.php(19): start(‘catalog’)
#11 {main}

Double-check your SMTP settings in System > Settings > Mail, and then try disabling or uninstalling any modifications that affect customer orders (i.e. the /catalog/model/checkout/order.php file). One of those is usually the cause of errors like this.