IssueTracker

My app has been obfuscated using R8, and I've generated a custom exception stack trace. I am using the retrace tool from the command-line tools package along with the mapping.txt to obtain the original stack trace, but it still outputs the obfuscated stack trace.

By comparing the mapping.txt with my stack trace, I can generally pinpoint where the error occurred in the source file, but I still want to use a tool to help me complete this process more quickly. I have searched online for a lot of information but haven't found a solution.

R8 version:8.6.27

Retrace 8.9.21 (build 5e0c90f55d8e11e1f14cdbacdcdb571ac76a1717 from go/r8bot (luci-r8-custom-ci-archive-0-nkew))

my proguard-rules.pro

-keepattributes Exceptions,InnerClasses,Signature,Deprecated,
                SourceFile,LineNumberTable,*Annotation*,EnclosingMethod
-keep class **$$ExternalSyntheticLambda* { *; }
-keepclassmembers class kotlin.Metadata { *; }

my error stack

Error: java.lang.NullPointerException
StackTrace: 
b1.a.onClick(Unknown Source:47)
android.view.View.performClick(View.java:7600)
com.google.android.material.button.MaterialButton.performClick(Unknown Source:9)
android.view.View.performClickInternal(View.java:7577)
android.view.View.-$$Nest$mperformClickInternal(Unknown Source:0)
android.view.View$PerformClick.run(View.java:30186)
android.os.Handler.handleCallback(Handler.java:942)
android.os.Handler.dispatchMessage(Handler.java:99)
android.os.Looper.loopOnce(Looper.java:211)
android.os.Looper.loop(Looper.java:300)
android.app.ActivityThread.main(ActivityThread.java:8503)
java.lang.reflect.Method.invoke(Native Method)
com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:561)
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:954)