Fix for no method error. Check attributes exist

hyrax/app/models/concerns/s3_file_handleable.rb

@@ -265,13 +265,27 @@ module S3FileHandleable
 
     complex_people.each do |person|
       full_name = []
-      full_name << person.last_name[0].strip
-      last_names << person.last_name[0].strip
-      full_name << person.first_name[0].strip
-      first_names << person.first_name[0].strip
-      names << full_name.join(', ')
+      if person.last_name.any? and person.last_name.first.present?
+        full_name << person.last_name[0].strip
+        last_names << person.last_name[0].strip
+      else
+        full_name << ""
+        last_names << ""
+      end
+      if person.first_name.any? and person.first_name.first.present?
+        full_name << person.first_name[0].strip
+        first_names << person.first_name[0].strip
+      else
+        first_names << ""
+      end
+
+      names << full_name.join(', ') if full_name.any?
       name_types << "Personal"
-      affiliations << person.affiliation[0].strip
+      if person.affiliation.any? and person.affiliation.first.present?
+        affiliations << person.affiliation[0].strip
+      else
+        affiliations << ""
+      end
 
       if person.orcid.any? and person.orcid.first.present?
         name_identifiers << person.orcid[0].strip
@@ -285,6 +299,8 @@ module S3FileHandleable
 
       if person.role.any? and person.role.first.present?
         roles << person.role[0].strip
+      else
+        roles << ""
       end
     end