App doesn't start

[light-and-ray]

I downloaded this app on my tablet to use it the screen as a flashlight, because this tablet doesn't have a regular flashlight, but the app crashes immediately. On my phone it works well. Is it because this app expects having a physical flashlight on device?

[CrazyMarvin]

The app does not expect a physical flashlight. I had a tablet without flash some time ago too.

Which model do you use?

[light-and-ray]

Galazy Tab A9+

Here are adb logcat logs

01-31 15:57:37.532  7300  7300 E TransactionExecutor: tId:1843449792     LaunchActivityItem{activityToken=android.os.BinderProxy@e7f40c9,intent=Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=rocks.poopjournal.flashy/.activities.MainActivity },ident=208744238,info=ActivityInfo{1728554 rocks.poopjournal.flashy.activities.MainActivity},curConfig={1.1 ?mcc0mnc [en_US] ldltr sw520dp w692dp h520dp 240dpi lrg land desk night finger -keyb/v/h -nav/h winConfig={ mBounds=Rect(441, 192 - 1479, 972) mAppBounds=Rect(441, 192 - 1479, 972) mMaxBounds=Rect(0, 0 - 1920, 1200) mDisplayRotation=ROTATION_90 mWindowingMode=freeform mActivityType=undefined mAlwaysOnTop=undefined mRotation=ROTATION_90 mStageConfig=undefined mEmbedActivityMode=undefined mPopOver=off mOverlappingWithCutout=false mCompatSandboxScale=-1.0 mDexTaskDockingState=none mFreeformTaskPinningState=unpinned} s.27 fontWeightAdjustment=0 ff=0 bf=0 bts=0 cst=1.0 nightDim=-1 desktop/e dm/nextgen dc/d ?dcui themeSeq=0},overrideConfig={1.1 ?mcc0mnc [en_US] ldltr sw520dp w692dp h520dp 240dpi lrg land desk night finger -keyb/v/h -nav/h winConfig={ mBounds=Rect(441, 192 - 1479, 972) mAppBounds=Rect(441, 192 - 1479, 972) mMaxBounds=Rect(0, 0 - 1920, 1200) mDisplayRotation=ROTATION_90 mWindowingMode=freeform mActivityType=standard mAlwaysOnTop=undefined mRotation=ROTATION_90 mStageConfig=undefined mEmbedActivityMode=undefined mPopOver=off mOverlappingWithCutout=false mCompatSandboxScale=-1.0 mDexTaskDockingState=none mFreeformTaskPinningState=unpinned} s.2 fontWeightAdjustment=0 ff=0 bf=0 bts=0 cst=1.0 nightDim=-1 desktop/e dm/nextgen dc/d ?dcui themeSeq=0},deviceId=0,referrer=com.sec.android.app.launcher,procState=7,state=null,persistentState=null,pendingResults=null,pendingNewIntents=null,sceneTransitionInfo=null,profilerInfo=null,assistToken=android.os.BinderProxy@3ef55c1,shareableActivityToken=android.os.BinderProxy@d4e8166,activityWindowInfo=ActivityWindowInfo{isEmbedded=false, taskBounds=Rect(441, 192 - 1479, 972), taskFragmentBounds=Rect(441, 192 - 1479, 972)}}
01-31 15:57:37.532  7300  7300 E TransactionExecutor: tId:1843449792     Target activity: rocks.poopjournal.flashy.activities.MainActivity
01-31 15:57:37.532  7300  7300 E AndroidRuntime: Process: rocks.poopjournal.flashy, PID: 7300
01-31 15:57:37.532  7300  7300 E AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{rocks.poopjournal.flashy/rocks.poopjournal.flashy.activities.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.Integer.intValue()' on a null object reference
01-31 15:57:37.532  7300  7300 E AndroidRuntime:        at rocks.poopjournal.flashy.utils.CameraHelper.getFlashlightStrengthLevel(CameraHelper.java:464)
01-31 15:57:37.532  7300  7300 E AndroidRuntime:        at rocks.poopjournal.flashy.activities.MainActivity.onCreate(MainActivity.java:89)
01-31 15:57:37.537  1155  1155 D SurfaceFlinger:      CLIENT | 0xb400007bc674d3f0 | 0000 | RGBA_8888    |    0.0    0.0  780.0 1038.0 |  247  467  989 1453 | Splash Screen rocks.poopjournal.flashy$_2388#363
01-31 15:57:37.539  1395  7324 W ActivityManager: crash : rocks.poopjournal.flashy,10077
01-31 15:57:37.539  1395  2497 W ActivityTaskManager:   Force finishing activity rocks.poopjournal.flashy/.activities.MainActivity

NullPointerException: Attempt to invoke virtual method 'int java.lang.Integer.intValue()' on a null object reference
at rocks.poopjournal.flashy.utils.CameraHelper.getFlashlightStrengthLevel(CameraHelper.java:464)
at rocks.poopjournal.flashy.activities.MainActivity.onCreate(MainActivity.java:89)