What's Wrong With My Procedure?

When I try to build my workspace and test my mod, it stops me, saying that there is something wrong with the only element in the mod, which is a procedure.

I looked through it, and everything looks fine.

It would be nice if someone could help me figure out what is wrong with it

Here is the procedure:

https://drive.google.com/file/d/1JRf5fUgPhOi8_GnZHQeoEzDYZ1_2v18n/view?usp=sharing

Here is the error message in the console:

https://postimg.cc/c6PsCHgk

Here is the popup i got when trying to build my workspace:

https://postimg.cc/S2sy2Yf3

Any help would be greatly appreciated!