java.lang.RuntimeException: Unable to start activity ComponentInfo{com.entitcs.office_attendance/com.entitcs.office_attendance.CRM.CRM_Retailer_List}: androidx.fragment.app.Fragment$InstantiationException: Unable to instantiate fragment com.entitcs.office_attendance.CRM.CRM_Retailer_List_Fragment: could not find Fragment constructor at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4415) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4636) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:112) at android.app.servertransaction.TransactionExecutor.executeNonLifecycleItem(TransactionExecutor.java:186) at android.app.servertransaction.TransactionExecutor.executeTransactionItems(TransactionExecutor.java:112) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:84) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2878) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loopOnce(Looper.java:249) at android.os.Looper.loop(Looper.java:337) at android.app.ActivityThread.main(ActivityThread.java:9465) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:636) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1005) Caused by: androidx.fragment.app.Fragment$InstantiationException: Unable to instantiate fragment com.entitcs.office_attendance.CRM.CRM_Retailer_List_Fragment: could not find Fragment constructor at androidx.fragment.app.Fragment.instantiate(Fragment.java:628) at androidx.fragment.app.FragmentContainer.instantiate(FragmentContainer.java:57) at androidx.fragment.app.FragmentManager$3.instantiate(FragmentManager.java:483) at androidx.fragment.app.FragmentStateManager.(FragmentStateManager.java:85) at androidx.fragment.app.FragmentManager.restoreSaveState(FragmentManager.java:2728) at androidx.fragment.app.FragmentController.restoreSaveState(FragmentController.java:198) at androidx.fragment.app.FragmentActivity$2.onContextAvailable(FragmentActivity.java:149) at androidx.activity.contextaware.ContextAwareHelper.dispatchOnContextAvailable(ContextAwareHelper.java:99) at androidx.activity.ComponentActivity.onCreate(ComponentActivity.java:322) at androidx.fragment.app.FragmentActivity.onCreate(FragmentActivity.java:273) at com.entitcs.office_attendance.CRM.CRM_Retailer_List.onCreate(CRM_Retailer_List.java:309) at android.app.Activity.performCreate(Activity.java:9212) at android.app.Activity.performCreate(Activity.java:9168) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1537) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4397) ... 13 more Caused by: java.lang.NoSuchMethodException: com.entitcs.office_attendance.CRM.CRM_Retailer_List_Fragment. [] at java.lang.Class.getConstructor0(Class.java:3395) at java.lang.Class.getConstructor(Class.java:2487) at androidx.fragment.app.Fragment.instantiate(Fragment.java:613) ... 27 more