Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/aake8592/subdomains/jurnal.aakpekalongan.ac.id/lib/pkp/classes/migration/CategoriesMigration.inc.php:19 Stack trace: #0 {main} thrown in /home/aake8592/subdomains/jurnal.aakpekalongan.ac.id/lib/pkp/classes/migration/CategoriesMigration.inc.php on line 19