I used this tutorial https://jenkins.io/doc/tutorials/using-jenkins-to-build-a-node-js-react-project/ but i got permission denied on deliver stage

[sails-cicd] Running shell script

• ./jenkins/scripts/deliver.sh
  /var/jenkins_home/workspace/sails-cicd@tmp/durable-fbe0e1fd/script.sh: 2: /var/jenkins_home/workspace/sails-cicd@tmp/durable-fbe0e1fd/script.sh: ./jenkins/scripts/deliver.sh: Permission denied
  Can you help me??

Thanks