How to fix error in Drupal 7 Catchable fatal error: Object of class stdClass could not be converted to string in?

Question

CMS

The site on Drupal 7 was entered into maintenance mode, after that on the main error Catchable fatal error: Object of class stdClass could not be converted to string in /home/uxxxxxxxx/public_html/includes/theme.inc on line 2708
on the authorization page lets on site.ru/user, but does not authorize, but throws again on a white screen with an error, help me solve the problem, I will be very grateful, here is the link, if anything goo.gl/l1Y9zM

Answer 1

if there is drush , then drush vset theme_default bartikif not, then you can set the theme_default value to bartik in the variable table in the database and then find and rename this region
in the .info file of the themeregions[user] = Description

Answer 2

https://drupal.org/node/1936480 google it. What's in the vicinity of line 2708?