React-Native, Android, Genymotion: ADB server didn't ACK

Question

I am working with React-Native, Android, and Genymotion on Mac. When I run react-native run-android I get this lines at the end of the launch operation:

Answer 1

After more research I've realized that Genymotion uses by default its own adb.

I switched to my main adb (the same used by react-native) and it solved the issue. I guess that because Genymotion's adb was launched first I got the Address already in use error message.