500 - Internal Server Error

Error: An exception has been thrown during the rendering of a template ("Unsupported operand types: string / int") in "urunler.html.twig" at line 72.
File: /home/dcsteqdw/public_html/templates/urunler.html.twig:72

Stack trace:
#0 /home/dcsteqdw/public_html/vendor/twig/twig/src/Environment.php(420) : eval()'d code(1698): Twig\Template->yieldBlock()
#1 /home/dcsteqdw/public_html/vendor/twig/twig/src/Template.php(402): __TwigTemplate_9f8af311544b47df360e61ac7fe4b96d->doDisplay()
#2 /home/dcsteqdw/public_html/vendor/twig/twig/src/Environment.php(420) : eval()'d code(50): Twig\Template->yield()
#3 /home/dcsteqdw/public_html/vendor/twig/twig/src/Template.php(402): __TwigTemplate_cfe7038e0f87652f74669469cbafaafa->doDisplay()
#4 /home/dcsteqdw/public_html/vendor/twig/twig/src/Template.php(358): Twig\Template->yield()
#5 /home/dcsteqdw/public_html/vendor/twig/twig/src/Template.php(373): Twig\Template->display()
#6 /home/dcsteqdw/public_html/vendor/twig/twig/src/TemplateWrapper.php(51): Twig\Template->render()
#7 /home/dcsteqdw/public_html/vendor/twig/twig/src/Environment.php(333): Twig\TemplateWrapper->render()
#8 /home/dcsteqdw/public_html/app/Core/AbstractController.php(108): Twig\Environment->render()
#9 /home/dcsteqdw/public_html/app/Controller/ProductController.php(76): Bieticaret\Core\AbstractController->render()
#10 /home/dcsteqdw/public_html/vendor/symfony/http-kernel/HttpKernel.php(163): Bieticaret\Controller\ProductController->index()
#11 /home/dcsteqdw/public_html/vendor/symfony/http-kernel/HttpKernel.php(75): Symfony\Component\HttpKernel\HttpKernel->handleRaw()
#12 /home/dcsteqdw/public_html/app/Routes.php(56): Symfony\Component\HttpKernel\HttpKernel->handle()
#13 /home/dcsteqdw/public_html/index.php(74): require_once('/home/dcsteqdw/...')
#14 {main}