AuthActivity startWebAuth Crash

Empieza inspeccionando com.dropbox.core.android.AuthActivity.kt, especialmente startWebAuth en la línea 295 y la ruta de onTopResumedActivityChanged mostrada en el trace. Reproduce el flujo de autenticación notificado y determina las condiciones que llevan a la SecurityException de la activity no exportada; se considera terminado cuando el flujo deja de fallar y el comportamiento relevante de Android queda cubierto mediante verificación.

Fatal Exception: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.VIEW dat=https://www.dropbox.com/... cmp=team.opay.pay.merchant.service/com.opay.webview.WebFoundationActivity } from ProcessRecord{28b315a 21629:com.smartwallet.app/u0a265} (pid=21629, uid=10265) not exported from uid 10256
at android.os.Parcel.createExceptionOrNull(Parcel.java:2373)
at android.os.Parcel.createException(Parcel.java:2357)
at android.os.Parcel.readException(Parcel.java:2340)
at android.os.Parcel.readException(Parcel.java:2282)
at android.app.IActivityTaskManager$Stub$Proxy.startActivity(IActivityTaskManager.java:4128)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1732)
at android.app.Activity.startActivityForResult(Activity.java:5370)
at android.app.Activity.startActivityForResult(Activity.java:5328)
at android.app.Activity.startActivity(Activity.java:5714)
at android.app.Activity.startActivity(Activity.java:5667)
at com.dropbox.core.android.AuthActivity.startWebAuth(AuthActivity.kt:295)
at com.dropbox.core.android.AuthActivity.onTopResumedActivityChanged$lambda-0(AuthActivity.kt:144)
at android.app.Activity.runOnUiThread(Activity.java:7138)
at com.dropbox.core.android.AuthActivity.onTopResumedActivityChanged(AuthActivity.kt:134)
at android.app.Activity.performTopResumedActivityChanged(Activity.java:2000)
at android.app.ActivityThread.reportTopResumedActivityChanged(ActivityThread.java:4911)
at android.app.ActivityThread.handleTopResumedActivityChanged(ActivityThread.java:4895)
at android.app.servertransaction.TopResumedActivityChangeItem.execute(TopResumedActivityChangeItem.java:39)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2203)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:268)
at android.app.ActivityThread.main(ActivityThread.java:8017)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:627)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:997)

   Caused by android.os.RemoteException: Remote stack trace:
at com.android.server.wm.ActivityStackSupervisor.checkStartAnyActivityPermission(ActivityStackSupervisor.java:1095)
at com.android.server.wm.ActivityStarter.executeRequest(ActivityStarter.java:1643)
at com.android.server.wm.ActivityStarter.execute(ActivityStarter.java:1279)
at com.android.server.wm.ActivityTaskManagerService.startActivityAsUser(ActivityTaskManagerService.java:1238)
at com.android.server.wm.ActivityTaskManagerService.startActivityAsUser(ActivityTaskManagerService.java:1181)