database is locked

Typecho\Db\Adapter\SQLException: database is locked in /home/w86/htdocs/86.sb/var/Typecho/Db/Adapter/SQLite.php:88 Stack trace: #0 /home/w86/htdocs/86.sb/var/Typecho/Db.php(394): Typecho\Db\Adapter\SQLite->query() #1 /home/w86/htdocs/86.sb/var/Typecho/Db.php(426): Typecho\Db->query() #2 /home/w86/htdocs/86.sb/var/Widget/Comments/Recent.php(58): Typecho\Db->fetchAll() #3 /home/w86/htdocs/86.sb/var/Typecho/Widget.php(155): Widget\Comments\Recent->execute() #4 /home/w86/htdocs/86.sb/var/Typecho/Widget.php(187): Typecho\Widget::widget() #5 /home/w86/htdocs/86.sb/var/Widget/Feed.php(135): Typecho\Widget::alloc() #6 /home/w86/htdocs/86.sb/var/Widget/Feed.php(110): Widget\Feed->feed() #7 /home/w86/htdocs/86.sb/var/Typecho/Widget.php(155): Widget\Feed->execute() #8 /home/w86/htdocs/86.sb/var/Typecho/Router.php(85): Typecho\Widget::widget() #9 /home/w86/htdocs/86.sb/index.php(23): Typecho\Router::dispatch() #10 {main}