Error when running BLE from nrfconnect

Hello, please help if you can.

Once connected. I am asked to program the board when trying to use BLE from nerf connect. 

However, I get the error: Error while setting up device E64320E5E18B: Timeout while waiting for device E64320E5E18B to be attached and enumerated

I have looked at previous queries but there doesn't seem to be a solution that has been viable for me. 

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