java.lang.IllegalArgumentException: com.entitcs.office_attendance: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.
Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles.
	at android.app.PendingIntent.checkFlags(PendingIntent.java:402)
	at android.app.PendingIntent.getActivityAsUser(PendingIntent.java:485)
	at android.app.PendingIntent.getActivity(PendingIntent.java:471)
	at android.app.PendingIntent.getActivity(PendingIntent.java:435)
	at com.google.firebase.messaging.zza.zzh(Unknown Source:124)
	at com.google.firebase.messaging.FirebaseMessagingService.zzd(Unknown Source:57)
	at com.google.firebase.iid.zzc.run(Unknown Source:2)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
	at com.google.android.gms.common.util.concurrent.zza.run(com.google.android.gms:play-services-basement@@17.6.0:2)
	at java.lang.Thread.run(Thread.java:1012)