Runtime Error CardView.setBackgroundColor(int)' null object

Capture

My app was running good. I came yesterday to make some changes in one of my screen called “B”. After finishing changes when i compiled and run the app on device this error pops out on my “C” screen even I didn’t modify or add a single block to this “C” screen. But strange thing this error don’t comes when we run and test it in companion app. Please help me whats the reason for this and how to solve. Before it was running fine.

Show Blocks Of CardView SetBackgroundClour Image

I have not set any background color. Its default. i checked all of my screens in which i have used list view are showing the same error.

Can Show Me Block Of When Error Occour
if On Start Then Show Screen Start Blocks

I think Problem In Desiner section Check Background Color Of All Card View
Else Delete And Recrate CardView

Bro I have total 17 screens in which I didn’t change any blocks except in one screen. But I’m facing this error in every screen where i have used List view with card view. I think this problem is in compiling because in companion app everything works perfect. But after compile to apk this error shows up.

Last time i compiled the same project to apk was on 15 August 2022. At that time everything was working fine. But yesterday after compiling to apk this error started to display.

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please dm your aia file