Fatal error: Uncaught Error: Call to a member function get() on null in /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-content/plugins/woocommerce/includes/wc-notice-functions.php:82
Stack trace:
#0 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-content/plugins/woo-advanced-qty/plugin/controllers/controller.quantity.php(248): wc_add_notice('The maximum qua...', 'error')
#1 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-includes/class-wp-hook.php(324): Morningtrain\WooAdvancedQTY\Plugin\Controllers\QuantityController::addToCartValidateQuantity(true, 14962, 0.2)
#2 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-includes/plugin.php(205): WP_Hook->apply_filters(true, Array)
#3 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-content/plugins/woocommerce/includes/class-wc-form-handler.php(840): apply_filters('woocommerce_add...', true, 14962, 0.2)
#4 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-content/plugins/woocommerce/includes/class-wc-form-handler.php(814): WC_Form_Handler::add_to_cart_handler_simple(14962)
#5 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-includes/class-wp-hook.php(324): WC_Form_Handler::add_to_cart_action('')
#6 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#7 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#8 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-settings.php(717): do_action('wp_loaded')
#9 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-config.php(81): require_once('/home/httpd/vho...')
#10 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-load.php(50): require_once('/home/httpd/vho...')
#11 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-blog-header.php(13): require_once('/home/httpd/vho...')
#12 /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/index.php(17): require('/home/httpd/vho...')
#13 {main}
  thrown in /home/httpd/vhosts/xn--schlssel-altdorf-mzb.ch/stofftigger.ch/wp-content/plugins/woocommerce/includes/wc-notice-functions.php on line 82