Fatal error: Uncaught TypeError: Unsupported operand types: string - int in /home2/serve4lc/ecommerce/smartschoolmart.com/system/storage/modification/catalog/controller/product/category.php:319
Stack trace:
#0 /home2/serve4lc/ecommerce/smartschoolmart.com/system/storage/modification/system/engine/action.php(51): ControllerProductCategory->index()
#1 /home2/serve4lc/ecommerce/smartschoolmart.com/catalog/controller/startup/router.php(25): Action->execute(Object(Registry))
#2 /home2/serve4lc/ecommerce/smartschoolmart.com/system/storage/modification/system/engine/action.php(51): ControllerStartupRouter->index()
#3 /home2/serve4lc/ecommerce/smartschoolmart.com/system/engine/front.php(34): Action->execute(Object(Registry))
#4 /home2/serve4lc/ecommerce/smartschoolmart.com/system/engine/front.php(29): Front->execute(Object(Action))
#5 /home2/serve4lc/ecommerce/smartschoolmart.com/system/framework.php(102): Front->dispatch(Object(Action), Object(Action))
#6 /home2/serve4lc/ecommerce/smartschoolmart.com/system/startup.php(125): require_once('/home2/serve4lc...')
#7 /home2/serve4lc/ecommerce/smartschoolmart.com/index.php(48): start('catalog')
#8 {main}
thrown in /home2/serve4lc/ecommerce/smartschoolmart.com/system/storage/modification/catalog/controller/product/category.php on line 319