Bugfix for displaying linked entities in catalog view panel

app/controllers/catalog_controller.rb

@@ -86,8 +86,8 @@ class CatalogController < ApplicationController
       named_entities[:HumanProd] = named_entities[:HumanProd].merge(doc_named_entities[:HumanProd]) do |key, oldval, newval|
         oldval.concat newval
       end
-      doc_named_entities_labels = helpers.get_linked_entities(doc_named_entities.map { |k, v| v.keys }.flatten.uniq)
-      linked_entities.merge(doc_named_entities_labels)
+      doc_named_entities_labels = helpers.get_linked_entities doc_named_entities.map { |k, v| v.keys }.flatten.uniq
+      linked_entities.merge!(doc_named_entities_labels)
     end
     render partial: "named_entities/named_entities", locals: { named_entities: named_entities, linked_entities: linked_entities }
   end