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Fancy Product Designer & Multistep Product Configurator

Fatal error

if I put attributes in a grouped product I get this error:

Fatal error: Uncaught Error: Call to undefined method WC_Product_Grouped::get_variation_attributes() in /home/b0f46881/public_html/etichette/wp-content/plugins/multistep-product-configurator/inc/class-frontend-product.php:112 Stack trace: #0 /home/b0f46881/public_html/etichette/wp-includes/class-wp-hook.php(288): MSPC_Frontend_Product->add_mspc_form('') #1 /home/b0f46881/public_html/etichette/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters(NULL, Array) #2 /home/b0f46881/public_html/etichette/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #3 /home/b0f46881/public_html/etichette/wp-content/themes/flatsome/woocommerce/single-product/layouts/product-no-sidebar.php(31): do_action('woocommerce_sin...') #4 /home/b0f46881/public_html/etichette/wp-includes/template.php(724): require('/home/b0f46881/...') #5 /home/b0f46881/public_html/etichette/wp-content/plugins/woocommerce/includes/wc-core-functions.php(195): load_template('/home/b0f46881/...', false) #6 /home/b0f46881/public_html/etichette/wp-content/themes/fl in /home/b0f46881/public_html/etichette/wp-content/plugins/multistep-product-configurator/inc/class-frontend-product.php on line 112


if I disable this plugin instead there are no problems. Why?


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