Something strange happened to my website and suddenly all the fields disappeared from view.
I tried to create new view with content type building. the building content type has the following fields Title, photos,address,building ready,price,description and logo.
at the time of creating the view I can find all the above fields and can add them without any problem but after few minutes the fields disappears from view and going back to add field only few common fields are available
Going back to view i can see a message "This view has been automatically updated to fix missing relationships. While this View should continue to work, you should verify that the automatic updates are correct and save this view."
During creating the view all the field are available
creating new view configuration screen
I tried to update Drupal noting changed
I tired to update Views noting changed
I tired Registry Rebuild noting changed