Fatal error: Uncaught Error: Call to a member function gSQLWhere() on null in /home/customda/public_html/include/qrcode_generation_variables.php:18 Stack trace: #0 /home/customda/public_html/qrcode_generation_list.php(16): require_once() #1 {main} thrown in /home/customda/public_html/include/qrcode_generation_variables.php on line 18