Failed to connect profiler on Android..

I failed to connect unity profiler with android device via usb

I tried to change port by "adb start-server adb forward tcp:53999 localabstract:Unity-xxx.xxx.xxx " .But when auto try connecting by Profiler ,the seach process will cease around the given port,it seems the port setting was valid,but still failed to load the profiler and return to “PlayerMode”

An error displayed in console:

On demand scheduler protocol error