[Magisk] timg11:
OK - tried adb logcat. OMG - what a mess! Thousands of lines of errors. Here are some samples related to Titanium:

[FONT="Courier New"][SIZE="2"]04-15 15:27:19.524 1137 7997 I ActivityManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.keramidas.TitaniumBackup/.MainActivity bnds=[640,99][839,391]} from uid 10021

..snip..

04-15 15:27:19.677 14121 14121 I com.keramidas.TitaniumBackup.MainActivity: Main Activity is being created for the first time => scheduling next wake-up ...

..snip..

04-15 15:27:21.752 14121 14190 W System.err: java.io.IOException: java.io.IOException: Cannot handle this backup properties file.
04-15 15:27:21.753 14121 14190 W System.err: at o.c.´(Source:832)
04-15 15:27:21.753 14121 14190 W System.err: at o.c.?(Source:786)
04-15 15:27:21.753 14121 14190 W System.err: at o.bx.´(Source:538)
04-15 15:27:21.753 14121 14190 W System.err: at com.keramidas.TitaniumBackup.MainActivity.`(Source:50220)
04-15 15:27:21.753 14121 14190 W System.err: at o.?.´(Source:4201)
04-15 15:27:21.753 14121 14190 W System.err: at o.ev.run(Source:16)

... repeat block above about 50 times...

04-15 15:29:06.904 14121 14121 D o.? : Instantiating view: 1
04-15 15:29:06.917 14121 14121 W System.err: java.io.IOException: java.io.IOException: Cannot handle this backup properties file.
04-15 15:29:06.918 14121 14121 W System.err: at o.c.´(Source:832)
04-15 15:29:06.918 14121 14121 W System.err: at o.c.?(Source:786)
04-15 15:29:06.918 14121 14121 W System.err: at com.keramidas.TitaniumBackup.MainActivity.´(Source:4324)
04-15 15:29:06.918 14121 14121 W System.err: at o.?.´(Source:992)
04-15 15:29:06.918 14121 14121 W System.err: at o.dP.getView(Source:36)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.AbsListView.obtainView(AbsListView.java:2366)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.ListView.makeAndAddView(ListView.java:2052)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.ListView.fillDown(ListView.java:786)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.ListView.fillFromTop(ListView.java:847)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.ListView.layoutChildren(ListView.java:1826)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.AbsListView.onLayout(AbsListView.java:2165)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.View.layout(View.java:20672)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewGroup.layout(ViewGroup.java:6194)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1812)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1656)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.LinearLayout.onLayout(LinearLayout.java:1565)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.View.layout(View.java:20672)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewGroup.layout(ViewGroup.java:6194)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.View.layout(View.java:20672)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewGroup.layout(ViewGroup.java:6194)
04-15 15:29:06.918 14121 14121 W System.err: at o.cOn.onLayout(Source:1388)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.View.layout(View.java:20672)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewGroup.layout(ViewGroup.java:6194)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.View.layout(View.java:20672)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewGroup.layout(ViewGroup.java:6194)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.View.layout(View.java:20672)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewGroup.layout(ViewGroup.java:6194)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1812)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1656)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.LinearLayout.onLayout(LinearLayout.java:1565)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.View.layout(View.java:20672)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewGroup.layout(ViewGroup.java:6194)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
04-15 15:29:06.918 14121 14121 W System.err: at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
04-15 15:29:06.918 14121 14121 W System.err: at com.android.internal.policy.DecorView.onLayout(DecorView.java:753)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.View.layout(View.java:20672)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewGroup.layout(ViewGroup.java:6194)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2792)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2319)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1460)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7183)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.Choreographer$CallbackRecord.run(Choreographer.java:949)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.Choreographer.doCallbacks(Choreographer.java:761)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.Choreographer.doFrame(Choreographer.java:696)
04-15 15:29:06.918 14121 14121 W System.err: at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:935)
04-15 15:29:06.918 14121 14121 W System.err: at android.os.Handler.handleCallback(Handler.java:873)
04-15 15:29:06.918 14121 14121 W System.err: at android.os.Handler.dispatchMessage(Handler.java:99)
04-15 15:29:06.918 14121 14121 W System.err: at android.os.Looper.loop(Looper.java:193)
04-15 15:29:06.918 14121 14121 W System.err: at android.app.ActivityThread.main(ActivityThread.java:6718)
04-15 15:29:06.918 14121 14121 W System.err: at java.lang.reflect.Method.invoke(Native Method)
04-15 15:29:06.918 14121 14121 W System.err: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
04-15 15:29:06.918 14121 14121 W System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

..snip..

04-15 15:29:18.376 620 642 D SurfaceFlinger: duplicate layer name: changing com.keramidas.TitaniumBackup/com.keramidas.TitaniumBackup.MainActivity to com.keramidas.TitaniumBackup/com.keramidas.TitaniumBackup.MainActivity#1

..snip..

04-15 15:29:20.577 1137 1638 E system_server: Failed to open APK '/data/local/tmp/com.keramidas.TitaniumBackup-install.apk' Invalid file
04-15 15:29:20.709 620 693 W SurfaceFlinger: Attempting to set client state on removed layer: com.keramidas.TitaniumBackup/com.keramidas.TitaniumBackup.MainActivity#1
04-15 15:29:20.710 620 693 W SurfaceFlinger: Attempting to destroy on removed layer: com.keramidas.TitaniumBackup/com.keramidas.TitaniumBackup.MainActivity#1
04-15 15:29:20.725 620 1854 W SurfaceFlinger: Attempting to set client state on removed layer: Dim Layer for - Task=237#1
04-15 15:29:20.725 620 1854 W SurfaceFlinger: Attempting to destroy on removed layer: Dim Layer for - Task=237#1
04-15 15:29:21.001 8311 8399 I Finsky : [35] hzb.run(3): Stats for Executor: BlockingExecutor ial@b06eb12[Running, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 6]
04-15 15:29:21.002 8311 8399 I Finsky : [35] hzb.run(3): Stats for Executor: LightweightExecutor ial@f7dc2e3[Running, pool size = 4, active threads = 0, queued tasks = 0, completed tasks = 61]
04-15 15:29:21.144 8311 8399 I Finsky : [35] hzb.run(3): Stats for Executor: bgExecutor ial@87f54e0[Running, pool size = 4, active threads = 0, queued tasks = 0, completed tasks = 17]
04-15 15:29:24.202 823 897 I CHRE : @ 16560.377: [AR_CHRE] inconsistent: 27[/SIZE][/FONT]

What to do now? Wipe phone and start over?