Fatal error: Uncaught Error: Call to a member function result_array() on bool in /home/jnuac/public_html/journal/application/models/mdb.php:35
Stack trace:
#0 /home/jnuac/public_html/journal/application/controllers/portal.php(70): Mdb->getDataGroup('journal_list', Array, Array)
#1 /home/jnuac/public_html/journal/system/core/CodeIgniter.php(359): Portal->archives()
#2 /home/jnuac/public_html/journal/index.php(203): require_once('/home/jnuac/pub...')
#3 {main}
thrown in /home/jnuac/public_html/journal/application/models/mdb.php on line 35