NOTE: this is not a Jenkins Core Bug, but I was not able to assign "gcloud-sdk-plugin" component, because it's not yet created. Sorry about that.

This exception is lauched in any case I try.

For example, running a simple "auth list" command using Google Credentials using a valid gcloud authentication json file, I get:

FATAL: null
java.lang.NullPointerException
at com.byclosure.jenkins.plugins.gcloud.GCloudBuildWrapper.decorateLauncher(GCloudBuildWrapper.java:56)
at hudson.model.AbstractBuild$AbstractBuildExecution.createLauncher(AbstractBuild.java:566)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:492)
at hudson.model.Run.execute(Run.java:1741)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:410)
Started calculate disk usage of build
Finished Calculation of disk usage of build in 0 seconds
Finished: FAILURE