Shifter stuck in park?

I can't move the shifter at all. Engine turns over. Brake lights work so I don't think it's the brake switch. I can hear the solenoid click when I press the brake. I tried the manual override underneath the leather shifter boot, and it would not release the shifter either. I have run into this issue a couple of times in the past and pressing the tab always releases the shifter. I looked under the car and it didn't look like the cable was disconnected, so I'm at a loss on what to look at next. Everything was working fine yesterday.