Core\PonghoException::Trying to get property of non-object

On file /mnt/md1/www/virtuali/www.arshalom.it/pongho/application/controllers/shop.php at line 129

#0 /mnt/md1/www/virtuali/www.arshalom.it/pongho/application/controllers/shop.php(129): Core\{closure}(8, 'Trying to get p...', '/mnt/md1/www/vi...', 129, Array)
#1 [internal function]: ShopController->__call('casula-seta-amo...', Array)
#2 /mnt/md1/www/virtuali/www.arshalom.it/pongho/system/action_controller/base.php(188): ShopController->casula-seta-amore-di-cristo.html()
#3 /mnt/md1/www/virtuali/www.arshalom.it/pongho/system/core/pongho.php(185): ActionController\Base->run('casula-seta-amo...')
#4 /mnt/md1/www/virtuali/www.arshalom.it/pongho/system/bootstrap.php(36): Core\Pongho::run()
#5 /mnt/md1/www/virtuali/www.arshalom.it/index.php(62): include('/mnt/md1/www/vi...')
#6 {main}