java.lang.RuntimeException: Unable to start activity ComponentInfo{com.chooloo.www.koler/com.chooloo.www.koler.ui.main.MainActivity}: androidx.fragment.app.Fragment$h: Unable to instantiate fragment k3.r: could not find Fragment constructor
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3834)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3980)
	at android.app.ActivityThread.handleRelaunchActivityInner(ActivityThread.java:5989)
	at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:5880)
	at android.app.servertransaction.ActivityRelaunchItem.execute(ActivityRelaunchItem.java:71)
	at android.app.servertransaction.ActivityTransactionItem.execute(ActivityTransactionItem.java:45)
	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2394)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loopOnce(Looper.java:211)
	at android.os.Looper.loop(Looper.java:300)
	at android.app.ActivityThread.main(ActivityThread.java:8296)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:559)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:954)
Caused by: androidx.fragment.app.Fragment$h: Unable to instantiate fragment k3.r: could not find Fragment constructor
	at androidx.fragment.app.Fragment.a0(Unknown Source:94)
	at androidx.fragment.app.l.f(Unknown Source:0)
	at androidx.fragment.app.w$d.a(Unknown Source:17)
	at androidx.fragment.app.b0.a(Unknown Source:2)
	at androidx.fragment.app.c0.<init>(Unknown Source:13)
	at androidx.fragment.app.w.i1(Unknown Source:245)
	at androidx.fragment.app.w.m(Unknown Source:136)
	at androidx.fragment.app.m.a(Unknown Source:4)
	at androidx.fragment.app.j.W(Unknown Source:3)
	at androidx.fragment.app.j.O(Unknown Source:0)
	at androidx.fragment.app.i.a(Unknown Source:2)
	at c.a.c(Unknown Source:20)
	at androidx.activity.ComponentActivity.onCreate(Unknown Source:7)
	at androidx.fragment.app.j.onCreate(Unknown Source:0)
	at k3.d.onCreate(Unknown Source:0)
	at android.app.Activity.performCreate(Activity.java:8523)
	at android.app.Activity.performCreate(Activity.java:8487)
	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1438)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3815)
	... 15 more
Caused by: java.lang.NoSuchMethodException: k3.r.<init> []
	at java.lang.Class.getConstructor0(Class.java:2363)
	at java.lang.Class.getConstructor(Class.java:1759)
	at androidx.fragment.app.Fragment.a0(Unknown Source:15)
	... 33 more