Drupal 7 site crashed after enabling module - No DB backup. What do? I enabled the blog module on a website, after that the site crashed.
The error is the same on everypage:


  Catchable fatal error: Argument 2 passed to
  entity_views_field_definition() must be an array, null given, called
  in
  /homez.653/xxxxxxxxx/www/sites/all/modules/entity/views/entity.views.inc
  on line 152 and defined in
  /homez.653/xxxxxxxxx/www/sites/all/modules/entity/views/entity.views.inc
  on line 175


Problem is that I don't have any backyp of the DB......

Any any idea on what should I do?

Thanks you per advance.
The mention of "I do not have a backup of the DB" in the question/title makes it clear that you want to roll-back the change as opposed to debugging and making the modules work where it is - for that, you do not need a backup, but access to the code and logs.


Another way to bypass the blog module, an alternative to what @Jimajamma said is to remove the module from the filesystem. 
Remember to clear the cache and ideally rebuilt the module registry after these steps.


drush cc all --yes;
drush rr;