Fatal error: Uncaught Error: Call to a member function prepare() on null in /home/u706648698/domains/calltutors.com/public_html/resources/php/DatabaseIO.php:424
Stack trace:
#0 /home/u706648698/domains/calltutors.com/public_html/PurchaseAssignment.php(33): DatabaseIO->Prepare('\n SELECT\n ...')
#1 {main}
thrown in /home/u706648698/domains/calltutors.com/public_html/resources/php/DatabaseIO.php on line 424