Hey,

I noticed that you are using an exploit called 'gen_libc.py'. This script requires the 'pwn' library, which is missing from the victim's machine. In my article, I utilized a different script.
The photo below will show which one I used (GitHub - hadrian3689/looney-tunables-CVE-2023-4911)



If you're unable to do that, consider the following options:

1. Look for an alternative exploit.
   
2. Request a restart of the machine on the platform.
   
3. Generate the library on your own machine and then transfer it to the victim's machine.