Help please, png sequence exporting doesn't render my shadow effect

Hey guys, I’m looking for some help, I tried to export the transparent png sequence and get to use it in AE, but I found it didn’t render some of my shadows, I use the shadow effect node along with the apply-peg-transformation node, I found that all shadows on the background(which I hide when I export cuz I need transparent background) didn’t show up after I exported PNG sequence, pls help, thank you guys!