It's too late for kids to attend this party (SOLVED)

Hello, wondering if anyone has encountered this glitch in their game and hopefully found a fix? I try throwing a party and no matter which hour I pick (even Saturday morning) I get the message "It's too late for kids to attend this party" when I try to invite kids. It happens even with slumber parties so I can't even throw one. The problem is persistent with multiple saves in multiple worlds. When I searched for the glitch on the forums, I saw threads from 2013, 2014 etc but they didn't have any solutions in them, sadly. So I decided to open the brand new 2020 thread hoping to get some helpful answers. o:) If anyone has any ideas, kindly share along!

Edit: Quick update for simmers coming across this thread in their searches for the same bug, a "no curfew" mod was causing it, I removed it and now my parties can have kids in them. :)