Procedure won't compile (please help)

I am trying to make an item that when it attacks an entity, will add a poison effect to the target, and add regeneration to the player but whenever I try to save it it says, "Your workspace contains mod elements that don't compile correctly".

This is the build log:

https://pastebin.com/axSdReuU

and this is the code for the procedure:

https://pastebin.com/ws2bJbeQ

Please let me know if there is a fix for this or if I did something wrong, thanks!