bug with Yoast SEO

hI!
Recipepress Reloaded has a bad mistake with YOAST SEO enabled.
YOAST SEO: Version 17.4
Recipepress Reloaded: Version 2.1.0

If i try to display a recipe or a custom taxonomies in frontend display a blanck page:
Fatal error: Uncaught Error: Call to undefined function Recipepress\Inc\Core\is_plugin_active() in /home/customer/www/mysite.it/public_html/wp-content/plugins/recipepress-reloaded/inc/core/class-integrations.php:76 Stack trace: #0 /home/customer/www/mysite.it/public_html/wp-includes/class-wp-hook.php(303): Recipepress\Inc\Core\Integrations->add_metadata_wpseo_graph(Array, Object(Yoast\WP\SEO\Context\Meta_Tags_Context)) #1 /home/customer/www/mysite.it/public_html/wp-includes/plugin.php(189): WP_Hook->apply_filters(Array, Array) #2 /home/customer/www/mysite.it/public_html/wp-content/plugins/wordpress-seo/src/generators/schema-generator.php(262): apply_filters('wpseo_schema_gr...', Array, Object(Yoast\WP\SEO\Context\Meta_Tags_Context)) #3 /home/customer/www/mysite.it/public_html/wp-content/plugins/wordpress-seo/src/generators/schema-generator.php(52): Yoast\WP\SEO\Generators\Schema_Generator->get_graph_pieces(Object(Yoast\WP\SEO\Context\Meta_Tags_Context)) #4 / in /home/customer/www/mysite.it/public_html/wp-content/plugins/recipepress-reloaded/inc/core/class-integrations.php on line 76