Andriod Emulator on a Mac

I have followed all of the steps in here.

I am able to run adb on the terminal and get the list of options.

When I try to run the app on the Android Emulator I get the following error:

Couldn’t start project on Android: Error running adb: Request failed with status code 400

which is weird because a couple of lines earlier I get the following message:

Successfully ran adb reverse. Localhost URLs should work on the connected Android device.

attached a picture of the console messages:

I have restarted my computer, updated the sdk and done everything in the link above, any other recommendations?