TypeError: Argument 2 passed to t() must be of the type array, integer given.

When I try to access the dblog I see following error:

TypeError: Argument 2 passed to t() must be of the type array, integer given, called in /var/www/xxx/docroot/modules/dblog/dblog.admin.inc on line 295 in t() (line 1735 of /var/www/xxx/docroot/includes/bootstrap.inc).

The proposed solution is:
dblog.admin.inc on line 295 Change:
$output = t($event->message, unserialize($event->variables)); => $output = t($event->message, [unserialize($event->variables)]);