Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "is_product" not found or invalid function name in /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/timber/timber/lib/Twig.php:296
Stack trace:
#0 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/timber/timber/lib/Twig.php(296): call_user_func_array('is_product', Array)
#1 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/Environment.php(418) : eval()'d code(41): Timber\Twig->exec_function('is_product')
#2 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/Template.php(405): __TwigTemplate_00fb8767bc93c0db44ee8d755f807501a9ffb135094cac29908badffcaf893ba->doDisplay(Array, Array)
#3 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/Template.php(378): Twig\Template->displayWithErrorHandling(Array, Array)
#4 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/Environment.php(418) : eval()'d code(73): Twig\Template->display(Array)
#5 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/Template.php(405): __TwigTemplate_6949efded43f86bfef0589912a4699d8043e1733251f256cabf5b1ccb4f6c2c7->doDisplay(Array, Array)
#6 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/Template.php(378): Twig\Template->displayWithErrorHandling(Array, Array)
#7 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/Environment.php(418) : eval()'d code(45): Twig\Template->display(Array, Array)
#8 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/Template.php(405): __TwigTemplate_0fae0e8b1c36c06442684db15d0e46bef0d04b9ec75cb35617c34d2494fcca62->doDisplay(Array, Array)
#9 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/Template.php(378): Twig\Template->displayWithErrorHandling(Array, Array)
#10 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/Template.php(390): Twig\Template->display(Array)
#11 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/twig/twig/src/TemplateWrapper.php(45): Twig\Template->render(Array, Array)
#12 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/timber/timber/lib/Loader.php(79): Twig\TemplateWrapper->render(Array)
#13 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/timber/timber/lib/Timber.php(334): Timber\Loader->render('archive.twig', Array, false, 'default')
#14 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/timber/timber/lib/Timber.php(383): Timber\Timber::compile('archive.twig', Array, false, 'default', true)
#15 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/timber/timber/lib/Timber.php(410): Timber\Timber::fetch('archive.twig', Array, false, 'default')
#16 /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/archive.php(56): Timber\Timber::render('archive.twig', Array)
#17 /home/webeditor95/addon/philotropes.org/wp-includes/template-loader.php(106): include('/home/webeditor...')
#18 /home/webeditor95/addon/philotropes.org/wp-blog-header.php(19): require_once('/home/webeditor...')
#19 /home/webeditor95/addon/philotropes.org/index.php(17): require('/home/webeditor...')
#20 {main}
thrown in /home/webeditor95/addon/philotropes.org/wp-content/themes/seomag/vendor/timber/timber/lib/Twig.php on line 296