Fatal error: Uncaught Error: Class 'Monolog\Handler\AbstractHandler' not found in D:\workspaces\liZiPingBack\vendor\symfony\monolog-bridge\Handler\ElasticsearchLogstashHandler.php:42 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\monolog-bridge\Handler\ElasticsearchLogstashHandler.php on line 42