各位大神帮我看看这是什么问题？

androidstudio写fileprovider时，在manifest中的申明一直报错AAPT: error: 'res/xml/filepath.xml' is incompatible with attribute resource (attr) reference.

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.system.apkinstaller">

<uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@android:style/Theme.NoDisplay" >
<activity android:name="com.system.apkinstaller.MainActivity" >
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.INSTALL_PACKAGE" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="file" />
<data android:scheme="content" />
<data android:mimeType="application/vnd.android.package-archive" />
</intent-filter>
</activity>

<provider android:name="android.support.v4.content.FileProvider" android:exported="false" android:authorities="com.system.apkinstaller.fileprovider" android:grantUriPermissions="true">
<meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="res/xml/filepath.xml" />
</provider>
</application>

</manifest>