Error occurred because the current computer and emulator are not connected.
Did you set up the Genymotion as described in the error?
If you hadn’t, go to Settings -> ADB, select “Use custom Android SDK tools” ->
and point it at your Android SDK directory.
Run emulator, click
developer options, enable
USB debugging and enable
Wi-Fi to Cellular.
Genymotion Shell and type
devices list to find the IP address of the device.
Open the terminal and enter
adb connect deviceIp:5555. Make sure the connection to
adb device is correct. Enter
adb usb and
adb tcpip 5555.