cannot run shell script in jenkins job whenever i tried to run got following error.
Started by user
ADMIN
Running as SYSTEM
Building in workspace /var/lib/jenkins/workspace/twofiletestfromgit
The recommended git tool is: NONE
No credentials specified
> git rev-parse --resolve-git-dir /var/lib/jenkins/workspace/twofiletestfromgit/.git # timeout=10
Fetching changes from the remote Git repository
> git config remote.origin.url
https://github.com/PankajJaswalDrish/twotestfilejenkins.git

1. timeout=10
   Fetching upstream changes from
   https://github.com/PankajJaswalDrish/twotestfilejenkins.git
   > git --version # timeout=10
   > git --version # 'git version 2.25.1'
   > git fetch --tags --force --progress –
   https://github.com/PankajJaswalDrish/twotestfilejenkins.git
   +refs/heads/:refs/remotes/origin/ # timeout=10
   > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
   Checking out Revision 77fc28ad716c3133991c67b2906b8eeeee107bcc (refs/remotes/origin/master)
   > git config core.sparsecheckout # timeout=10
   > git checkout -f 77fc28ad716c3133991c67b2906b8eeeee107bcc # timeout=10
   Commit message: "bash"
   > git rev-list --no-walk 77fc28ad716c3133991c67b2906b8eeeee107bcc # timeout=10
   [twofiletestfromgit] $ /bin/sh -xe /tmp/jenkins13744814338305333626.sh
   + python test.py
   Introduction of ESP32
   Introduction ESPIDF
   + python test1.py
   haha
   + cd /home/dr69/Desktop/gitDemo/
   + ./backup.sh
   cp: cannot create regular file '/home/dr69/Desktop/gitDemo/backup/test.py': Permission denied
   cp: cannot create regular file '/home/dr69/Desktop/gitDemo/backup/test1.py': Permission denied
   Build step 'Execute shell' marked build as failure
   Finished: FAILURE
   I attached here an image file please have look on this file

Please guide me .