我正在部署我的reactjs应用程序。我已经为它编写了管道脚本，以部署在来自Jenkins的EC2服务器上。
每次构建都成功，但没有输出。我无法找到错误。当我通过putty登录到EC2示例时，当我手动部署应用程序时，应用程序正在运行，但当我在管道中编写和执行相同的步骤时，没有输出
我用了好几种方法检查，但都没用
这是我在直接部署到服务器时使用的简单Jenkins文件，因为我正在检查错误

pipeline {
    agent {
        label 'master'
    }
    stages {
        stage('Deploy') { 
            agent {
                label 'testnode'
            }
            steps {
               script{

                    sh """
                        #!/bin/bash
                        ls
                        sudo npm start &
                    """

                }
            }
        }
    }
}

控制台输出

Started by user Mani
Replayed #18
 > git rev-parse --resolve-git-dir /var/lib/jenkins/caches/git-02fb4007d201f8b81dff24c4385bb601/.git # timeout=10
Setting origin to https://ManiGopal27@bitbucket.org/nariyapratik/econote-web.git
 > git config remote.origin.url https://ManiGopal27@bitbucket.org/nariyapratik/econote-web.git # timeout=10
Fetching origin...
Fetching upstream changes from origin
 > git --version # timeout=10
 > git --version # 'git version 2.32.0'
 > git config --get remote.origin.url # timeout=10
using GIT_ASKPASS to set credentials Bitbucket
 > git fetch --tags --force --progress -- origin +refs/heads/*:refs/remotes/origin/* # timeout=10
Seen branch in repository origin/master
Seen 1 remote branch
Obtained Jenkinsfile from 95b8c92cd4dab7a9e6e8d13c81c84bca700dbe36
[Pipeline] Start of Pipeline
[Pipeline] node
Running on Jenkins in /var/lib/jenkins/workspace/React_master
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Declarative: Checkout SCM)
[Pipeline] checkout
The recommended git tool is: git
using credential Bitbucket
 > git rev-parse --resolve-git-dir /var/lib/jenkins/workspace/React_master/.git # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url https://ManiGopal27@bitbucket.org/nariyapratik/econote-web.git # timeout=10
Fetching without tags
Fetching upstream changes from https://ManiGopal27@bitbucket.org/nariyapratik/econote-web.git
 > git --version # timeout=10
 > git --version # 'git version 2.32.0'
using GIT_ASKPASS to set credentials Bitbucket
 > git fetch --no-tags --force --progress -- https://ManiGopal27@bitbucket.org/nariyapratik/econote-web.git +refs/heads/*:refs/remotes/origin/* # timeout=10
Checking out Revision 95b8c92cd4dab7a9e6e8d13c81c84bca700dbe36 (master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 95b8c92cd4dab7a9e6e8d13c81c84bca700dbe36 # timeout=10
Commit message: "Jenkinsfile edited online with Bitbucket"
 > git rev-list --no-walk 95b8c92cd4dab7a9e6e8d13c81c84bca700dbe36 # timeout=10
[Pipeline] }
[Pipeline] // stage
[Pipeline] withEnv
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Deploy)
[Pipeline] node
Running on testnode in /home/ec2-user/workspace/React_master
[Pipeline] {
[Pipeline] checkout
The recommended git tool is: git
using credential Bitbucket
Fetching changes from the remote Git repository
Fetching without tags
 > git rev-parse --resolve-git-dir /home/ec2-user/workspace/React_master/.git # timeout=10
 > git config remote.origin.url https://ManiGopal27@bitbucket.org/nariyapratik/econote-web.git # timeout=10
Fetching upstream changes from https://ManiGopal27@bitbucket.org/nariyapratik/econote-web.git
 > git --version # timeout=10
 > git --version # 'git version 2.32.0'
using GIT_ASKPASS to set credentials Bitbucket
 > git fetch --no-tags --force --progress -- https://ManiGopal27@bitbucket.org/nariyapratik/econote-web.git +refs/heads/*:refs/remotes/origin/* # timeout=10
Checking out Revision 95b8c92cd4dab7a9e6e8d13c81c84bca700dbe36 (master)
Commit message: "Jenkinsfile edited online with Bitbucket"
[Pipeline] withEnv
[Pipeline] {
[Pipeline] script
[Pipeline] {
[Pipeline] sh
+ ls
Jenkinsfile
node_modules
package.json
package-lock.json
public
README.md
serve.json
src
webpack.config.js
yarn.lock
+ sudo npm start
[Pipeline] }
[Pipeline] // script
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // node
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
Finished: SUCCESS

total 39416
    drwxrwxrwx    6 ec2-user ec2-user      265 Jun 21 05:19 .
    drwxrwxr-x    6 ec2-user ec2-user      100 Jun 20 09:19 ..
    -rw-rw-r--    1 ec2-user ec2-user       25 Jun 21 05:14 .env
    drwxrwxrwx    8 ec2-user ec2-user      162 Jun 21 05:20 .git
    -rw-rw-r--    1 ec2-user ec2-user      503 Jun 21 05:14 .gitignore
    -rw-rw-r--    1 ec2-user ec2-user      797 Jun 21 05:14 Jenkinsfile
    drwxrwxrwx 1280 ec2-user ec2-user    40960 Jun 15 17:58 node_modules
    -rw-rw-r--    1 ec2-user ec2-user     3429 Jun 21 05:14 package.json
    -rw-rw-r--    1 ec2-user ec2-user  1070508 Jun 21 05:14 package-lock.json
    drwxrwxrwx    4 ec2-user ec2-user      105 Jun 21 05:14 public
    -rw-rw-r--    1 ec2-user ec2-user     4397 Jun 21 05:14 README.md
    -rw-rw-r--    1 ec2-user ec2-user      285 Jun 21 05:14 serve.json
    drwxrwxrwx    5 ec2-user ec2-user      101 Jun 21 05:14 src
    -rw-rw-r--    1 ec2-user ec2-user     1784 Jun 21 05:14 webpack.config.js
    -rwxrwxrwx    1 root     root       653925 Jun 15 17:56 yarn.lock
    + sudo npm start
    [Pipeline] }
    [Pipeline] // script
    [Pipeline] }
    [Pipeline] // withEnv
    [Pipeline] }
    [Pipeline] // node
    [Pipeline] }
    [Pipeline] // stage
    [Pipeline] }
    [Pipeline] // withEnv
    [Pipeline] }
    [Pipeline] // node
    [Pipeline] End of Pipeline
    Finished: SUCCESS

当我通过登录到EC2服务器手动使用相同的命令（sudo npm run start）部署应用程序时，它正在运行，我看到了输出，但从Jenkins那里我遇到了这个问题。
有谁能帮我解决这个问题吗？