database is locked

Typecho\Db\Adapter\SQLException: database is locked in /mnt/disk/www-cm2/wwwroot/blog/var/Typecho/Db/Adapter/SQLite.php:88 Stack trace: #0 /mnt/disk/www-cm2/wwwroot/blog/var/Typecho/Db.php(391): Typecho\Db\Adapter\SQLite->query() #1 /mnt/disk/www-cm2/wwwroot/blog/var/Typecho/Db.php(424): Typecho\Db->query() #2 /mnt/disk/www-cm2/wwwroot/blog/var/Widget/Archive.php(1542): Typecho\Db->fetchAll() #3 /mnt/disk/www-cm2/wwwroot/blog/var/Widget/Archive.php(1792): Widget\Archive->query() #4 /mnt/disk/www-cm2/wwwroot/blog/var/Widget/Archive.php(739): Widget\Archive->singleHandle() #5 /mnt/disk/www-cm2/wwwroot/blog/var/Typecho/Widget.php(155): Widget\Archive->execute() #6 /mnt/disk/www-cm2/wwwroot/blog/var/Typecho/Router.php(96): Typecho\Widget::widget() #7 /mnt/disk/www-cm2/wwwroot/blog/index.php(23): Typecho\Router::dispatch() #8 {main}