Help building Gradle

Sorry if this is the wrong place for this. I’ve hit a bit of a brick wall trying to build Gradle in my ubuntu setup. I’m essentially trying to use elasticsearch with opennlp which requires a ‘Gradle build’ command. This command is where I’m getting issues. I’ve got all the required dependencies but I’m getting a ‘execution failed for task ‘:signedArchives’. Cannot perform signing task :signedArchives because it has no configured signatory.

Any ideas?

Any ideas anyone? Or has anyone seen the ‘signedArchives’ failure before and able to suggest a fix?