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:814)
at io.jenkins.plugins.jfrog.Utils.createProxyConfiguration(Utils.java:92)
Jenkins.get() invocation must be in the master node and never on the agent.
Fix https://github.com/jfrog/jenkins-jfrog-plugin/issues/24#issuecomment-1467409067
Fix the following error:
Jenkins.get() invocation must be in the master node and never on the agent.