cPanel Server Management Help?

Hi everyone!

As a total beginner to SaaS, I'm trying to get my head around server administration, especially with cPanel, and I'm hitting a wall with a routine task. I'm not sure if it's a beginner mistake or something else, so I've included a dummy error snippet below. Any pointers or resources for cPanel server administration would be super helpful!

[2023-10-27 10:30:05] ERROR: Failed to update package 'example-plugin'.
[2023-10-27 10:30:05] REASON: Permission denied for user 'cpaneluser'.

Thanks in advance!