To answer your question, yes, yes there is. To enable the developer mode you need access to your terminal, in the magento root run this command:
php bin/magento deploy:mode:set developer
this sets Magento to developer mode, which displays errors in the browser for the "developer" to see. You can also achieve this (if the screen is just white) with the below code added into
$error = error_get_last();
this should be enough to get the error on screen. If not, check your server error logs as opposed to Magento's to see if it's added there.