Fatal error: Uncaught Error: Call to a member function select() on null in /home/tacercomtr/public_html/app/model/systems/systems_model.php:8 Stack trace: #0 /home/tacercomtr/public_html/app/controller/projects/projects.php(12): systems_model->getProduct('-ONUR-MUHENDiSL...') #1 /home/tacercomtr/public_html/app/library/Bootsrap.php(36): Projects->index() #2 /home/tacercomtr/public_html/index.php(35): Bootsrap->__construct() #3 {main} thrown in /home/tacercomtr/public_html/app/model/systems/systems_model.php on line 8