php class error

Fatal error: Uncaught exception ‘Exception’ with message ‘Unable to open file “D:\wamp\www\country_blocker\wp-content\plugins\ip2location-country-blocker\database.bin”.’ in D:\wamp\www\country_blocker\wp-content\plugins\ip2location-country-blocker\ip2location.class.php on line 102.

I have work hard for this but it doesn’t work.what is the problem in code..

https://wordpress.org/plugins/ip2location-country-blocker/