Fatal error: Uncaught Error: Class "PKP\cliTool\CommandLineTool" not found in /var/www/html/lib/pkp/classes/cliTool/MergeUsersTool.php:21 Stack trace: #0 {main} thrown in /var/www/html/lib/pkp/classes/cliTool/MergeUsersTool.php on line 21