出现问题

[fifa87]

Caused by: java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
E AndroidRuntime: at androidx.appcompat.app.AppCompatDelegateImpl.setSupportActionBar(AppCompatDelegateImpl.java:572)
E AndroidRuntime: at androidx.appcompat.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:159)
E AndroidRuntime: at com.ess.filepicker.activity.SelectFileByScanActivity.initUi(SelectFileByScanActivity.java:69)
E AndroidRuntime: at com.ess.filepicker.activity.SelectFileByScanActivity.onCreate(SelectFileByScanActivity.java:58)
E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:7891)
E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:7880)
E AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1353)
E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3526)