[Samsung Galaxy S8 Questions and Answers] Liudvikas:
Hey, I have exactly the same from yesterday. Currently investigating and trying to recover.

Here is the crash report of System UI:

--------- beginning of crash
04-18 06:01:42.862 4224 4224 E AndroidRuntime: FATAL EXCEPTION: main
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Process: com.android.systemui, PID: 4224
04-18 06:01:42.862 4224 4224 E AndroidRuntime: java.lang.IncompatibleClassChangeError: Structural change of com.samsung.android.clockpack.plugins.clock.ClockView is hazardous (/data/app/com.samsung.android.app.aodservice-hd_tsaCAZE6KcExvzRnyPw==/oat/arm64/base.odex at compile time, /data/dalvik-cache/arm64/system@priv-app@SystemUI@SystemUI.apk@classes.dex at runtime): Virtual method count off: 13 vs 10
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Lcom/samsung/android/clockpack/plugins/clock/ClockView; (Compile time):
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Static fields:
04-18 06:01:42.862 4224 4224 E AndroidRuntime: I SCALE_MODE_EXTRA_SMALL
04-18 06:01:42.862 4224 4224 E AndroidRuntime: I SCALE_MODE_MEDIUM
04-18 06:01:42.862 4224 4224 E AndroidRuntime: I SCALE_MODE_MEDIUM_SMALL
04-18 06:01:42.862 4224 4224 E AndroidRuntime: I SCALE_MODE_NONE
04-18 06:01:42.862 4224 4224 E AndroidRuntime: I SCALE_MODE_SMALL
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Instance fields:
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Direct methods:
04-18 06:01:42.862 4224 4224 E AndroidRuntime: <init>(Landroid/content/Context;)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: <init>(Landroid/content/Context;Landroid/util/AttributeSet;)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: <init>(Landroid/content/Context;Landroid/util/AttributeSet;I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: <init>(Landroid/content/Context;Landroid/util/AttributeSet;II)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Virtual methods:
04-18 06:01:42.862 4224 4224 E AndroidRuntime: getClockType()I
04-18 06:01:42.862 4224 4224 E AndroidRuntime: getExtraData(Landroid/os/Bundle;)Landroid/os/Bundle;
04-18 06:01:42.862 4224 4224 E AndroidRuntime: isScalable()Z
04-18 06:01:42.862 4224 4224 E AndroidRuntime: refresh()V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setAdaptiveColors(IIII)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setCustomColor(I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setDateVisibility(I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setExtraData(Landroid/os/Bundle;)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setPaletteIndex(I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setScaleClock(FI)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setScaleMode(I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setTimeVisibility(I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: suspend(Z)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Lcom/samsung/android/clockpack/plugins/clock/ClockView; (Runtime):
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Static fields:
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Instance fields:
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Direct methods:
04-18 06:01:42.862 4224 4224 E AndroidRuntime: <init>(Landroid/content/Context;)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: <init>(Landroid/content/Context;Landroid/util/AttributeSet;)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: <init>(Landroid/content/Context;Landroid/util/AttributeSet;I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: <init>(Landroid/content/Context;Landroid/util/AttributeSet;II)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: Virtual methods:
04-18 06:01:42.862 4224 4224 E AndroidRuntime: getClockType()I
04-18 06:01:42.862 4224 4224 E AndroidRuntime: isScalable()Z
04-18 06:01:42.862 4224 4224 E AndroidRuntime: refresh()V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setAdaptiveColors(II)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setCustomColor(I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setDateVisibility(I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setPaletteIndex(I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setScaleMode(Z)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: setTimeVisibility(I)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: suspend(Z)V
04-18 06:01:42.862 4224 4224 E AndroidRuntime: (declaration of 'com.samsung.android.uniform.widget.clock.AbsClockView' appears in /data/app/com.samsung.android.app.aodservice-hd_tsaCAZE6KcExvzRnyPw==/base.apk)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexFile.defineClassNative(Native Method)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexFile.defineClass(DexFile.java:282)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:275)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexPathList$Element.findClass(DexPathList.java:677)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexPathList.findClass(DexPathList.java:466)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:91)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexFile.defineClassNative(Native Method)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexFile.defineClass(DexFile.java:282)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:275)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexPathList$Element.findClass(DexPathList.java:677)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexPathList.findClass(DexPathList.java:466)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:91)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexFile.defineClassNative(Native Method)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexFile.defineClass(DexFile.java:282)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:275)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexPathList$Element.findClass(DexPathList.java:677)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.DexPathList.findClass(DexPathList.java:466)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:91)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.createView(LayoutInflater.java:606)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.View.inflate(View.java:24373)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.samsung.android.uniform.plugins.UfClockProvider.getClockView(UfClockProvider.java:59)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.systemui.servicebox.pages.clock.ExternalClockProvider.getClockView(ExternalClockProvider.java:335)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.systemui.servicebox.pages.clock.KeyguardClockPage.getContentsView(KeyguardClockPage.java:531)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.systemui.servicebox.pages.KeyguardServiceBoxPage.attachContentsView(KeyguardServiceBoxPage.java:440)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.systemui.servicebox.pages.clock.KeyguardClockPage.attachContentsView(KeyguardClockPage.java:479)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.systemui.servicebox.pages.clock.KeyguardClockPage.considerChangeClockView(KeyguardClockPage.java:458)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.systemui.servicebox.pages.clock.KeyguardClockPage.onFinishInflate(KeyguardClockPage.java:163)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.rInflate(LayoutInflater.java:876)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.View.inflate(View.java:24373)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.systemui.servicebox.pages.KeyguardPageItem.getPageView(KeyguardPageItem.java:52)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.systemui.servicebox.pages.KeyguardServiceBoxPageAdapter.instantiateItem(KeyguardServiceBoxPageAdapter.java:91)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.internal.widget.PagerAdapter.instantiateItem(PagerAdapter.java:110)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.internal.widget.ViewPager.addNewItem(ViewPager.java:810)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.internal.widget.ViewPager.populate(ViewPager.java:960)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.internal.widget.ViewPager.populate(ViewPager.java:892)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.internal.widget.ViewPager.onMeasure(ViewPager.java:1434)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.systemui.servicebox.KeyguardServiceBoxViewPager.onMeasure(KeyguardServiceBoxViewPager.java:63)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.View.measure(View.java:23147)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6922)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.View.measure(View.java:23147)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6922)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.widget.LinearLayout.measureVertical(LinearLayout.java:806)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.widget.LinearLayout.onMeasure(LinearLayout.java:685)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.View.measure(View.java:23147)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6922)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.View.measure(View.java:23147)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6922)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.View.measure(View.java:23147)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6922)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.View.measure(View.java:23147)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6922)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.View.measure(View.java:23147)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2794)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1831)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2086)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1706)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7735)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.Choreographer.doCallbacks(Choreographer.java:723)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.Choreographer.doFrame(Choreographer.java:658)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.os.Handler.handleCallback(Handler.java:789)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.os.Handler.dispatchMessage(Handler.java:98)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.os.Looper.loop(Looper.java:164)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at android.app.ActivityThread.main(ActivityThread.java:6887)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at java.lang.reflect.Method.invoke(Native Method)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
04-18 06:01:42.862 4224 4224 E AndroidRuntime:	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1370)