This module helps monitor errors and exceptions happening in Magento 2 instance.
It intercepts different places Magento 2 is handling and logging exceptions and collects all data into a single table.
It merges exceptions using filename and line number on witch error happened and counts each separate exceptions.
This way you can focus on exceptions by volume.
composer require fsw2/magento2-error-sieve
php bin/magento module:enable Fsw_ErrorSieve
php bin/magento setup:upgrade
Module adds its view in System > Tools > Errors Sieve with simple management of issues.