Fatal error pada sirkulasi peminjaman akasia 8

dimana letak kesalah Fatal error: Uncaught Error: Call to a member function fetch_all() on boolean in /home/icjam229/public_html/admin/modules/circulation/circulation_action.php:537 Stack trace: #0 {main} thrown in /home/icjam229/public_html/admin/modules/circulation/circulation_action.php on line 537 dan bagaimana cara mengatasinya ?