Testing in device

Question

Hello,

            When I tried to test the app WindowsPhone 8.1 in Windows Phone10 device the following error has be occured how could I resolve this error 

 

Severity Code Description Project File Line Suppression State

Error Error : DEP6100 : The following unexpected error occurred during bootstrapping stage 'Connecting to the device '30F105C9-681E-420b-A277-7C086EAD8A4E'.':

DeviceException - Deployment failed because no Windows Phone was detected. Make sure a phone is connected and powered on. App6