This is probably nothing to worry about, but I thought I would mention it anyway. I was looking through the Wordfence log for a recently created site and noticed a bot trying this location. I know that often they are looking for known weaknesses. So I’m just wondering why they were trying this one:
I think the bot meant to go to your plugins page, but messed up it’s script. There’s nothing but JS in that folder so you are fine. Have a great weekend.