It’s hard to say without knowing where the NullPointerException is coming from. If you have Android Studio installed, you could try running fuse build -tandroid -d to check if the project opens in it, and then shows some more information.
If it’s the build that fails and it doesn’t even get to opening Android Studio, you should try running the build with additional options, as suggested:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.