Migrating from D6 to D8 Main Content not visible

I have done the migration from D6 to D8 yesterday. I used the core Migration module. Everything went well, but I have issue to view Treasures and Main Content. They are visible and editable in edit mode but no visible in view mode. I have checked all (Manage form display) and (Manage display) and the BODY filed seems fine, not hidden. Any advise please?

Please help how I can fix the issue,

I migrate from this website

http://kurdistanica.com/drupal8/

to this

http://kurdistanica.com

Drupal version: 


Source: https://www.drupal.org/taxonomy/term/21/feed