Failed to get permission info for android.permission.android.permission.READ_CONTACTS

Hi there

I am trying to implement Google Play Service into my Project, which is compiled fpr Android. Sadly, I am always getting following Error in the Log:

Failed to get permission info for android.permission.android.permission.READ_CONTACTS, manifest likely missing custom permission declaration Permission android.permission.android.permission.READ_CONTACTS ignored

My Application is running, until I call the Social.localUser.Authenticate function, than it crashes.

Here is my AndroidManifest.xml File:

 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
   <uses-permission android:name="android.permission.NFC" />
   <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
   <uses-permission android:name="android.permission.INTERNET" />
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
   <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
   <uses-permission android:name="com.android.vending.BILLING" />
   <uses-permission android:name="android.permission.GET_ACCOUNTS" />
   <uses-permission android:name="android.permission.USE_CREDENTIALS" />
   <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
   <uses-permission android:name="android.permission.WRITE_CONTACTS" />
   <uses-permission android:name="android.permission.android.permission.READ_CONTACTS" />
   <application android:icon="@drawable/app_icon" android:label="@string/app_name">
     <activity android:name="com.google.unity.GoogleUnityActivity" android:label="@string/app_name" android:screenOrientation="landscape" android:launchMode="singleTask" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale">
       <intent-filter>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.LAUNCHER" />
         <category android:name="com.google.intent.category.CARDBOARD" />
       </intent-filter>
       <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
     </activity>
     <meta-data android:name="IMMERSIVE_MODE" android:value="true" />
  
     <meta-data android:name="com.google.android.gms.nearby.connection.SERVICE_ID"
         android:value="" />
 
     <meta-data android:name="com.google.android.gms.games.APP_ID"
         android:value="\ XXXXXXXXXXXXX" />
     <meta-data android:name="com.google.android.gms.games.unityVersion"
         android:value="\ X.X.XX" />
     <meta-data android:name="com.google.android.gms.version"
         android:value="@integer/google_play_services_version" />
 
     <activity android:name="com.google.games.bridge.NativeBridgeActivity"
         android:theme="@android:style/Theme.Translucent.NoTitleBar.Fullscreen" />
   
     <activity
               android:name="com.unity3d.ads.android.view.UnityAdsFullscreenActivity"
               android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen"
               android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
               android:hardwareAccelerated="true"
               tools:ignore="UnusedAttribute"/>
   </application>
   <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="22" />
   <uses-feature android:glEsVersion="0x00020000" />
   <uses-feature android:name="android.hardware.sensor.accelerometer" android:required="true" />
   <uses-feature android:name="android.hardware.sensor.gyroscope" android:required="true" />
 </manifest>

Does anyone of you have an Idea, what could be causing this error?

Thank you for answering!