[Magisk] Didgeridoohan:
Not really my area of expertise... Only thing I can see in there is that the app is crashing (d'uh) and that it's happening here (after a whole bunch of system errors and warnings about "Unsupported class loader"):

[05-13 22:02:21.269 23480:23480 E/AndroidRuntime]
FATAL EXCEPTION: main
Process: com.samsung.android.soundassistant, PID: 23480
android.view.InflateException: Binary XML file line #40: Error inflating class com.sec.android.soundassistant.widget.MediaVolumeSeekBarPreference
at androidx.preference.PreferenceInflater.createItem(Unknown Source:144)
at androidx.preference.PreferenceInflater.createItemFromTag(Unknown Source:15)
at androidx.preference.PreferenceInflater.rInflate(Unknown Source:101)
at androidx.preference.PreferenceInflater.rInflate(Unknown Source:111)
at androidx.preference.PreferenceInflater.inflate(Unknown Source:40)
at androidx.preference.PreferenceInflater.inflate(Unknown Source:12)
at androidx.preference.PreferenceManager.inflateFromResource(Unknown Source:9)
at androidx.preference.PreferenceFragmentCompat.addPreferencesFromResource(Unknown Source:13)
at com.sec.android.soundassistant.fragments.Aa.onCreate(Unknown Source:20)
at androidx.fragment.app.Fragment.performCreate(Unknown Source:13)
at androidx.fragment.app.FragmentManagerImpl.moveToState(Unknown Source:465)
at androidx.fragment.app.FragmentTransition.addToFirstInLastOut(Unknown Source:210)
at androidx.fragment.app.FragmentTransition.calculateFragments(Unknown Source:18)
at androidx.fragment.app.FragmentTransition.startTransitions(Unknown Source:36)
at androidx.fragment.app.FragmentManagerImpl.executeOpsTogether(Unknown Source:111)
at androidx.fragment.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(Unknown Source:88)
at androidx.fragment.app.FragmentManagerImpl.execPendingActions(Unknown Source:21)
at androidx.fragment.app.FragmentManagerImpl.dispatchStateChange(Unknown Source:9)
at androidx.fragment.app.FragmentManagerImpl.dispatchActivityCreated(Unknown Source:6)
at androidx.fragment.app.FragmentController.dispatchActivityCreated(Unknown Source:4)
at androidx.fragment.app.FragmentActivity.onStart(Unknown Source:15)
at androidx.appcompat.app.AppCompatActivity.onStart(Unknown Source:0)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1514)
at android.app.Activity.performStart(Activity.java:7838)
at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3398)
at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2109)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7682)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
at androidx.preference.PreferenceInflater.createItem(Unknown Source:112)
... 35 more
Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/samsung/android/media/SemSoundAssistantManager;
at com.sec.android.soundassistant.widget.MediaVolumeSeekBarPreference.<init>(Unknown Source:34)
... 38 more
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.samsung.android.media.SemSoundAssistantManager" on path: DexPathList[[zip file "/data/app/com.samsung.android.soundassistant-3dwUrTQUBSAxXqqkxSbyeQ==/base.apk"],nativeLibraryDirectories=[/data/app/com.samsung.android.soundassistant-3dwUrTQUBSAxXqqkxSbyeQ==/lib/arm64, /system/lib64, /system/product/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:196)

[05-13 22:02:21.269 23480:23480 E/AndroidRuntime]
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
... 39 more

[05-13 22:02:21.271 1604:23517 I/DropBoxManagerService]
add tag=data_app_crash isTagEnabled=true flags=0x2

[05-13 22:02:21.271 1604:3178 W/ActivityTaskManager]
Force finishing activity com.samsung.android.soundassistant/com.sec.android.soundassistant.activities.MainActivity

[05-13 22:02:21.271 1604:23517 D/FrameworkEventCollector]
recordAppIssue PN: com.samsung.android.soundassistant

[05-13 22:02:21.272 1604:6551 D/gwy]
OS Event: crash

I'm sorry, but I'm of no further help with this...