ftpPublish声明性管道

pipeline {
    agent any
    stages {
        ... building stuff...
        stage('push to develop'){
            when {
                branch 'develop' 
            }
            steps {
                ftpPublisher paramPublish: [ parameterName: "" ], alwaysPublishFromMaster: true, masterNodeName: master, continueOnError: false, failOnError: false, publishers: [
                    [configName: 'cp-front', usePromotionTimestamp: false, useWorkspaceInPromotion: false, verbose: true, transfers: [
                        [asciiMode: false, cleanRemote: false, excludes: '', flatten: false, makeEmptyDirs: false, noDefaultExcludes: false, patternSeparator: '[, ]+', remoteDirectorySDF: false, removePrefix: '', sourceFiles: '**/*']
                    ]]
                ]
            }
        }
    }
}

groovy.lang.MissingPropertyException:没有这样的属性:master for groovy.lang.Binding.getVariable(绑定。java:63)在 org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.sandboxiterceptor.onGetProperty(sandboxiterceptor。java:264) 在org.kohsuke.groovy.sandbox.impl.Checker$6.call(Checker。java:288) 在 在 org.kohsuke.groovy.sandbox.impl.Checker.checkedGetProperty(Checker。java:268) 在 在 com.cloudbees.groovy.cps.sandbox.sandboxyvoker.getProperty(sandboxyvoker。java:29) com.cloudbees.groovy.cps.impl.PropertyAccessBlock.rawGet(PropertyAccessBlock。java:20) 在WorkflowScript.run(工作流cript:22)

这让我不知道发生了什么。有什么建议吗?