Fatal error: Uncaught Error: Undefined constant "INDEX_FILE_LOCATION" in /home/aake8592/subdomains/jurnal.aakpekalongan.ac.id/lib/pkp/classes/core/Core.inc.php:39 Stack trace: #0 /home/aake8592/subdomains/jurnal.aakpekalongan.ac.id/lib/pkp/classes/core/Core.inc.php(23): Core::getBaseDir() #1 {main} thrown in /home/aake8592/subdomains/jurnal.aakpekalongan.ac.id/lib/pkp/classes/core/Core.inc.php on line 39