You can be fishing and the crappie shut down where you are fishing. You have a choice of what you do. Three options are move, change or check.
Change to another spot if you have another place where you feel confident you can catch crappie.
Two, start changing colors and actions. It’s possible the crappie have gotten use to one particular color or the light penetration has changed. Switching to another color might get the action started again or at least add a few more bites.
Three, see if fish are still there. It’s possible the fish are no longer on the brushpile and have moved off to deeper or shallow water. Bait movement, light penetration or catching fish from the brush might have caused them to move. A quick scan with sonar will show you. –TH