WSOD after changing VIEWS

Hi!

I get WSOD after change some parametrs (sorting or title) of any views on my site. When i pressed button “Save changes” i saw white screen, but dates in DB table “views_display” was changed. Only appley the database backup i could repaired site. What is it? How it repair? 

Drupal version: 


Source: https://www.drupal.org/taxonomy/term/22/feed