ChildProcessError: Command failed: "/Users/xxxx/Library/Android/sdk/platform-tools/adb" -s emulator-5554 shell "ps | grep (exited with error code 1) (code=1), stdout and stderr:

ChildProcessError: Command failed: "/Users/xxxx/Library/Android/sdk/platform-tools/adb" -s emulator-5554 shell "ps | grep (exited with error code 1) (code=1), stdout and stderr: #550