NPC script doesn't work when NPC is spawned?

I have an NPC that's supposed to follow the player. When I spawn the NPC through a button, it just stands in the spawn and doesn't move or follow. It normally does move and follow. Help?

This is not an ASKING WEBSITE. We need your script to fix it, Please put a script on your next post or edit this current one with your script then I'll stop the moderation vote.