NordicSemiconductor component is missing

[ParkJS]

Hello I am happy to you to read this text...

I meet a problem...

when I want to work nrf51_SDK_10.0.0/example/peripheral/blinky/pca10028

so i clicked "Rebuild" but it have said

ERROR #544: Requred Software Pack 'NordicSemiconductor.nRF_DeviceFamilyPack.8.2.0' is not installed ERROR #541: 'NordicSemiconductor::Device:Startup:8.2.0' component is missing, pack 'NordicSemiconductor.nRF_DeviceFamilyPack.8.2.0' is not installed Target not created.

BUT!! I did install [Project]-[Manage]-[Pack installer]/캡처.PNG

How can i do?

[ParkJS]

캡처1.PNGthis is a my new error when i try to install keil device family pack...