Fatal error: Uncaught Error: Class "WP_Translation_Controller" not found in /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-includes/l10n.php:796
Stack trace:
#0 /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-includes/l10n.php(1367): load_textdomain()
#1 /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-includes/l10n.php(1384): _load_textdomain_just_in_time()
#2 /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-includes/l10n.php(194): get_translations_for_domain()
#3 /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-includes/l10n.php(306): translate()
#4 /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-content/plugins/all-in-one-event-calendar/lib/exception/handler.php(584): __()
#5 /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-content/plugins/all-in-one-event-calendar/lib/exception/handler.php(199): Ai1ec_Exception_Handler->_get_backtrace()
#6 [internal function]: Ai1ec_Exception_Handler->handle_exception()
#7 {main}
  thrown in /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-includes/l10n.php on line 796

Fatal error: Uncaught Error: Class "WP_Translation_Controller" not found in /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-includes/l10n.php:796
Stack trace:
#0 /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-includes/l10n.php(953): load_textdomain()
#1 /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain()
#2 [internal function]: WP_Fatal_Error_Handler->handle()
#3 {main}
  thrown in /mnt/web009/a0/67/54410167/htdocs/wordpress/wp-includes/l10n.php on line 796