[Magisk] spambayes:
I'm getting the same thing:

01-13 05:35:32.109 I/art (29460): Rejecting re-init on previously-failed class java.lang.Class<com.topjohnwu.magisk.utils.FingerprintHelper>
01-13 05:35:32.109 I/art (29460): Rejecting re-init on previously-failed class java.lang.Class<com.topjohnwu.magisk.utils.FingerprintHelper>
01-13 05:35:32.109 D/AndroidRuntime(29460): Shutting down VM
01-13 05:35:32.109 E/AndroidRuntime(29460): FATAL EXCEPTION: main
01-13 05:35:32.109 E/AndroidRuntime(29460): Process: com.topjohnwu.magisk, PID: 29460
01-13 05:35:32.109 E/AndroidRuntime(29460): java.lang.NoClassDefFoundError: Failed resolution of: Lcom/topjohnwu/magisk/utils/FingerprintHelper;
01-13 05:35:32.109 E/AndroidRuntime(29460):	at com.topjohnwu.magisk.SettingsActivity$SettingsFragment.onCreate(Unknown Source)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.Fragment.performCreate(Fragment.java:2075)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:868)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1082)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.BackStackRecord.run(BackStackRecord.java:833)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.Activity.performStart(Activity.java:6327)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2652)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2754)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.ActivityThread.access$900(ActivityThread.java:177)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.os.Handler.dispatchMessage(Handler.java:102)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.os.Looper.loop(Looper.java:145)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at android.app.ActivityThread.main(ActivityThread.java:5938)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at java.lang.reflect.Method.invoke(Native Method)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at java.lang.reflect.Method.invoke(Method.java:372)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1389)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1184)
01-13 05:35:32.109 E/AndroidRuntime(29460): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.topjohnwu.magisk.utils.FingerprintHelper" on path: DexPathList[[zip file "/data/app/com.topjohnwu.magisk-2/base.apk"],nativeLibraryDirectories=[/data/app/com.topjohnwu.magisk-2/lib/arm, /vendor/lib, /system/lib]]
01-13 05:35:32.109 E/AndroidRuntime(29460):	at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
01-13 05:35:32.109 E/AndroidRuntime(29460):	... 18 more
01-13 05:35:32.109 E/AndroidRuntime(29460):	Suppressed: java.lang.NoClassDefFoundError: com.topjohnwu.magisk.utils.FingerprintHelper
01-13 05:35:32.109 E/AndroidRuntime(29460):	at dalvik.system.DexFile.defineClassNative(Native Method)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at dalvik.system.DexFile.defineClass(DexFile.java:226)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:219)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at dalvik.system.DexPathList.findClass(DexPathList.java:321)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)
01-13 05:35:32.109 E/AndroidRuntime(29460):	... 20 more
01-13 05:35:32.109 E/AndroidRuntime(29460):	Suppressed: java.lang.ClassNotFoundException: com.topjohnwu.magisk.utils.FingerprintHelper
01-13 05:35:32.109 E/AndroidRuntime(29460):	at java.lang.Class.classForName(Native Method)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
01-13 05:35:32.109 E/AndroidRuntime(29460):	at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
01-13 05:35:32.109 E/AndroidRuntime(29460):	... 19 more
01-13 05:35:32.109 E/AndroidRuntime(29460):	Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
01-13 05:35:32.109 V/ApplicationPolicy( 823): isApplicationStateBlocked userId 0 pkgname com.topjohnwu.magisk
01-13 05:35:32.109 W/ActivityManager( 823): Force finishing activity com.topjohnwu.magisk/.SettingsActivity
01-13 05:35:32.119 W/ActivityManager( 823): Force finishing activity com.topjohnwu.magisk/.MainActivity
01-13 05:35:32.119 D/FocusedStackFrame( 823): Set to : 0
01-13 05:35:32.129 E/android.os.Debug( 823): ro.product_ship = true
01-13 05:35:32.129 E/android.os.Debug( 823): ro.debug_level = 0x4f4c
01-13 05:35:32.139 D/StatusBarManagerService( 823): manageDisableList userId=0 what=0x0 pkg=WindowManager.LayoutParams
01-13 05:35:32.139 D/PointerIcon( 823): setMouseIconStyle1 pointerType: 1001iconType:101 flag:0
01-13 05:35:32.139 D/PointerIcon( 823): setMouseCustomIcon IconType is same.101
01-13 05:35:32.139 D/PointerIcon( 823): setHoveringSpenIconStyle1 pointerType: 10001iconType:1 flag:0
01-13 05:35:32.139 D/PointerIcon( 823): setHoveringSpenCustomIcon IconType is same.1
01-13 05:35:32.139 D/CrashAnrDetector( 823): processName: com.topjohnwu.magisk
01-13 05:35:32.139 D/CrashAnrDetector( 823): broadcastEvent : com.topjohnwu.magisk data_app_crash

Anyone have a workaround or fix?