Fatal error: Uncaught Error: Class "PKP\plugins\GenericPlugin" not found in C:\xampp\htdocs\journal\plugins\generic\recommendByAuthor\RecommendByAuthorPlugin.php:29 Stack trace: #0 {main} thrown in C:\xampp\htdocs\journal\plugins\generic\recommendByAuthor\RecommendByAuthorPlugin.php on line 29