Error message

• Warning: Undefined array key "variante" in commerce_custom_listini_node_view() (line 1358 of sites/all/modules/5Terre_entities/commerce_custom_listini/commerce_custom_listini.module).
• Warning: Undefined array key "und" in commerce_custom_listini_node_view() (line 1359 of sites/all/modules/5Terre_entities/commerce_custom_listini/commerce_custom_listini.module).
• Warning: foreach() argument must be of type array|object, null given in commerce_custom_listini_node_view() (line 1359 of sites/all/modules/5Terre_entities/commerce_custom_listini/commerce_custom_listini.module).