Fatal error: Uncaught Error: Attempt to modify property "speaker" on null in /var/www/am2023/application/models/describeModel.php:19 Stack trace: #0 /var/www/am2023/application/controllers/describe.php(17): describeModel->getProfileDetails() #1 /var/www/am2023/application/core/App.php(42): describe->profile() #2 /var/www/am2023/application/init.php(17): App->__construct() #3 /var/www/am2023/index.php(3): require_once('...') #4 {main} thrown in /var/www/am2023/application/models/describeModel.php on line 19