React-native test fail

I have followed all the steps for installing the react-native with andriod studio and everything runs smoothly, I have created a new project to run the react-native test but when the welcome message should come out the emulator screen stays in White, I show the screens so that what is happening is observed

I hope your answers thank you very much !! Carga en el emulador[1] http://ift.tt/2qWuvvX Emulator[2] http://ift.tt/2rUsAoI