java.lang.IllegalStateException: Jenkins.instance is missing. Read the documentation of Jenkins.getInstanceOrNull to see what you are doing wrong.
	at jenkins.model.Jenkins.get(Jenkins.java:816)
	at jenkins.model.GlobalConfiguration.all(GlobalConfiguration.java:75)
	at jenkins.plugins.logstash.LogstashConfiguration.getInstance(LogstashConfiguration.java:289)
	at jenkins.plugins.logstash.LogstashWriter.getIndexerDao(LogstashWriter.java:162)
	at jenkins.plugins.logstash.LogstashWriter.getDaoOrNull(LogstashWriter.java:201)
	at jenkins.plugins.logstash.LogstashWriter.<init>(LogstashWriter.java:82)
	at jenkins.plugins.logstash.pipeline.GlobalDecorator.decorate(GlobalDecorator.java:41)
	at org.jenkinsci.plugins.workflow.log.TaskListenerDecorator.decorateAll(TaskListenerDecorator.java:231)
	at org.jenkinsci.plugins.workflow.log.TaskListenerDecorator$DecoratedTaskListener.getLogger(TaskListenerDecorator.java:269)
	at org.jenkinsci.plugins.workflow.log.TaskListenerDecorator$CloseableTaskListener.getLogger(TaskListenerDecorator.java:306)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$2.execute(CliGitAPIImpl.java:807)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$GitCommandMasterToSlaveCallable.call(RemoteGitImpl.java:170)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$GitCommandMasterToSlaveCallable.call(RemoteGitImpl.java:161)
	at hudson.remoting.UserRequest.perform(UserRequest.java:211)
	at hudson.remoting.UserRequest.perform(UserRequest.java:54)
	at hudson.remoting.Request$2.run(Request.java:377)
	at hudson.remoting.InterceptingExecutorService.lambda$wrap$0(InterceptingExecutorService.java:78)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:833)