Upgrade Virtual machine running server 2008 r2 to server 2012 r2.......

Hi Everyone.........

I have virtual Server machine Current Running Server 2008 r2 data-center, and try to upgrade server 2012 r2 data-center but unfortunately not Upgrade and Showing Errors like below....

how to upgrade virtual server machine in server 2012 r2, Please help me for this Issue .