I’m a bit of a n00b (okay, MASSIVE understatement, I’m a n00b) and am running through the starting points to get the hang of things, but I seem to be having issues.

I’m trying to run the WP Admin Shell Upload exploit, but every time I hit “run”, it tells me that “Exploit failed: An exploitation error occurred” and then it says “Exploit completed, but no session was created”. I’ve logged in with the password and username and verified that they’re correct.
I’m using a Kali Linux VM and running as root@kali, any hints for what I need to do to proceed?