Spirit walker is a client sided sided script that emulates no clipping or spectating.
You will not be able to go through a wall and expect it to preform such a task.
If you actually could the 75% of servers would be ruined.
If you want to get from one position to another without walking then you need to have the permissions.
It's a simple concept: you can't preform server sided tasks on a client sided script.
TLDR: the script never worked in the first place if you want to actually noclip.