Fatal error: Uncaught Error: Class "Monolog\Handler\AbstractProcessingHandler" not found in /home/maborneapp/public_html/test/vendor/xibosignage/support/src/Xibo/Support/Monolog/Handler/RocketChatHandler.php:13 Stack trace: #0 {main} thrown in /home/maborneapp/public_html/test/vendor/xibosignage/support/src/Xibo/Support/Monolog/Handler/RocketChatHandler.php on line 13