(node:53177) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: Cannot read property 'message' of undefined

Question

Not sure what has caused this issue.. It worked fine yesterday. Today when I tried to run react-native run-android. I get this error. any ideas?

Starting JS server...
Running adb -s 3f71ece6 reverse tcp:8081 tcp:8081
Building and installing the app on the device (cd android && ./gradlew installDebug)...
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/android-setup.html

(node:53177) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: Cannot read property 'message' of undefined

Answer 1

I had a similar problem trying to run a project created on Windows on Ubuntu. The solution I found was that the gradlew file in project/root/android was not set as executable. So simply adding a chmod +x gradlew solved this issue for me.