使用下面的Jenkins作业，我正在尝试从服务器删除上传

@Library('fossology-scan@feature/Abilash') _

node(label: 'si0engubudoct09') {
    try {
        def server_url = "https://si0engubudoct09.com:8089/repo"

        def authentication_name = "FOSSOLOGY_Testing"

        String filepath = readFile "/root/Abilash/upload_id.txt"
        
        def list = filepath.collect { it }
        println "list : $list"
        
        idlist=list.split()
        idlist.each { id ->
    
        each_upload_id = id
        
        def delete_upload_url  = server_url + "/api/v1/uploads/" + each_upload_id
        
        }
        
        def access_token = ""
       
        
        withCredentials([string(credentialsId: authentication_name, variable: 'token')]) {
            access_token = token
        }

        def authentication = "Bearer " + access_token
       
        
        stage('delete upload') {
        
            delete_operations.delete_upload(server_url, each_upload_id, authentication)
            
        }      
        
    }
    
    catch (org.jenkinsci.plugins.workflow.steps.FlowInterruptedException e) {
        currentBuild.result = 'ABORTED'
    }
    catch (e) {
        echo "error: $e"
        currentBuild.result = 'FAILURE'
    }
}

==========================================================================================================================================================================================================================================================

/* The below function delete uploads that exist in the server. */

def delete_upload(server_url,each_upload_id,authentication){
      
    def delete_upload_url  = server_url + "/api/v1/uploads/" + each_upload_id

    def response =  httpRequest consoleLogResponseBody: true, 
                    contentType: 'APPLICATION_JSON', 
                    customHeaders: [[maskValue: false, name: 'id ', value: each_upload_id],
                    [maskValue: false, name: 'Authorization', value: authentication]], 
                    httpMode: 'DELETE', ignoreSslErrors: true, responseHandle: 'NONE', url: delete_upload_url,
                    validResponseCodes: '100:599'
   
    if(response.status == 202){
    def result = readJSON text: """${response.content}"""
    return result['message'].toString()
    }
    else {
        throw new Exception("Incorrect upload id! Please give the correct upload id.")
    }
}

错误：

[Pipeline] Start of Pipeline
[Pipeline] node
Running on si0engubudoct09.de.bosch.com in /data/osm-jenkins-slave/workspace/FOSSology/Testing/Test-Jobs/cbl1cob/delete_uploads_Testing
[Pipeline] {
[Pipeline] readFile
[Pipeline] echo
list : [2, 
, 3, 
, 4, 
, 5, 
, 6, 
]
[Pipeline] echo
error: groovy.lang.MissingMethodException: No signature of method: java.util.ArrayList.split() is applicable for argument types: () values: []
Possible solutions: split(groovy.lang.Closure), split(groovy.lang.Closure), split(groovy.lang.Closure), wait(), init(), init()
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
Finished: FAILURE

========================================================================================================================================================================================================================================================== /根/阿比拉什/上传身份证. txt root@si0engubudoct09：~/阿比拉什#猫上传身份证. txt 2 3 4 5 6
要求：我需要使用文件upload_id. txt中的上载id，并将其作为JSL函数中的循环
有什么建议吗？