Notice: Undefined variable: con in /home/healthy/exams.medical-healthy.info/template/int.php on line 3
Fatal error: Uncaught Error: Call to a member function prepare() on null in /home/healthy/exams.medical-healthy.info/template/int.php:3
Stack trace:
#0 /home/healthy/exams.medical-healthy.info/student-training.php(8): include()
#1 {main}
thrown in /home/healthy/exams.medical-healthy.info/template/int.php on line 3