Not sure how you searched but I assume you didn't use or know apt? How do you install packages in the first place? Through GUI or Terminal?
EDIT: I assume you use the Linux Mint GUI package manager. I can't find how to do this too, would need to search more detailed but I don't have enough time for this now, need sleep, don't have enough sleep.
I know about and have used apt, I install pretty much everything through the terminal. What I searched for was "how to reinstall libpcre" because I thought that it required a specific method or something due to the fact that it's a system library.
Anyways, it reinstalled it but I wont know if it fixed the issue until tonight.