After Satellite 6.4 to 6.5 upgrade, "Something went wrong when retrieving the resource" when trying to view some Content Hosts.

Issue

• After upgrading from Satellite 6.4 to Satellite 6.5 successfully, seeing the below error when trying to view some Content Hosts :-

Something went wrong when retrieving the resource.

• The production.log shows the below error followed by a traceback :-

ActionView::Template::Error: undefined method `split' for nil:NilClass
/usr/share/foreman/app/models/nic/base.rb:90:in `type_name'
/usr/share/foreman/app/views/api/v2/interfaces/main.json.rabl:9:in `block in eval_source'
/opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.13.1/lib/rabl/builder.rb:152:in `node'
/opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.13.1/lib/rabl/builder.rb:114:in `block in compile_settings'
/opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.13.1/lib/rabl/builder.rb:113:in `each'