ReactNative(Android)-找不到符号类ReactInstanceManager

我刚刚升级到 React Native 0.63.3..... 我也升级了 Android studio4.1.1和 gradle 插件到4.1.0. 当我尝试构建时
出现错误cannot find symbol class ReactInstanceManager。

错误在文件中MainApplication.java......请参阅下面的代码。

出现错误是与行initializeFlipper(this,getReactNativeHost().getReactInstanceManager());。似乎是说我提供com.facebook.react.ReactInstanceManager....但是程序想要的是ReactInstanceManager.
它说Get the current ReactInstanceManager instance, or create one.

  @Override
  public void onCreate() {
    super.onCreate();
    SoLoader.init(this, /* native exopackage */ false);
    initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
  }

  /**
   * Loads Flipper in React Native templates. Call this in the onCreate method with something like
   * initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
   *
   * @param context
   * @param reactInstanceManager
   */
  private static void initializeFlipper(
      Context context, ReactInstanceManager reactInstanceManager) {
    if (BuildConfig.DEBUG) {
      try {
        /*
         * We use reflection here to pick up the class that initializes Flipper, since
         * Flipper library is not available in release mode
         */
        Class<?> aClass = Class.forName("com.xs.ReactNativeFlipper");
        aClass
            .getMethod("initializeFlipper", Context.class, ReactInstanceManager.class)
            .invoke(null, context, reactInstanceManager);
      } catch (ClassNotFoundException e) {

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