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

Maybe your adb versions are mismatching

Check:

adb version 

Then:

cd /Path/to/Android/Sdk/platform-tools && ./adb version

If these two are different you have an error here, just remove adb from sys and copy the one that is in platform-tools to /usr/bin/