Device is not paired error

Development Platform & Builds Mobile
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1

Hi,

My launching on ios device suddenly stopped working. I glanced through the log, and found this:

ogPlayLevel: DeploymentServer: [DD] Trying to connect to mobile device running iOS ...
LogPlayLevel: DeploymentServer: Connect: Failed to Connect
LogPlayLevel: DeploymentServer: Connect: Device is not paired
LogPlayLevel: DeploymentServer: Error: Call to AMDeviceCopyValue failed
LogPlayLevel: DeploymentServer: Error: Call to AMDeviceCopyValue failed
LogPlayLevel: DeploymentServer: Error: Call to AMDeviceCopyValue failed
LogPlayLevel: DeploymentServer: Error: Call to AMDeviceCopyValue failed
LogPlayLevel: DeploymentServer: Error: Call to AMDeviceCopyValue failed
LogPlayLevel: DeploymentServer: Error: Call to AMDeviceCopyValue failed
LogPlayLevel: DeploymentServer: Error: Call to AMDeviceCopyValue failed
LogPlayLevel: DeploymentServer: Error: Call to AMDeviceCopyValue failed
LogPlayLevel: DeploymentServer: Device '' with id  of type  is being checked against All_iOS_On_BASE4DABASS.
LogPlayLevel: DeploymentServer: Error: Call to AMDeviceCopyValue failed
LogPlayLevel: DeploymentServer: [DD] Transferring IPA to device '' ...
LogPlayLevel: DeploymentServer: Connect: Device is not paired
LogPlayLevel: DeploymentServer: Directory (PublicStaging) doesn't exist!
LogPlayLevel: DeploymentServer: CreateDirectory (PublicStaging) failed
LogPlayLevel: DeploymentServer: Connect: Device is not paired
LogPlayLevel: DeploymentServer:
LogPlayLevel: DeploymentServer: Unhandled Exception: System.IO.IOException: AFCFileRefOpen (/PublicStaging/Coforco22.ipa) failed with error 7

What does this mean?

My certificates, and provisioning profiles are ok,

2

The same problem here. Found that it’s very unstable. E.g. scenario like BUILD->FAIL->REBUILD->OK is very often for me. Started with XCode 11 Beta 4.