Sliverstrip Blog module dependency error

I am installed Blog module from this link GitHub - silverstripe/silverstripe-blog: Blog module for SilverStripe CMS. then i got below issue

Fatal error: Class 'SilverStripe\Lumberjack\Model\Lumberjack' not found in /var/www/html/silverstripe/mysite/src/Model/BlogFilter.php on line 21

i thought the dependency file is missing for that i setup dependency module from GitHub - silverstripe/silverstripe-lumberjack: Keep in control of large SiteTrees by using GridField to manage pages..

But still i am facing same issue…please can any one provide the solution

How did you install the module?