خطا موقع اجرای برنامه (گوگل مپ)

برنامم موقع اجرا متوقف میشه.بخش logcat و کد ها رو میزارم میشه ببینید کجای کار ایراد داره؟؟

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.s_ghanbari.m2/com.example.s_ghanbari.m2.MapsActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.maps.GoogleMap com.google.android.gms.maps.MapFragment.getMap()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.4.0'
    compile 'com.google.android.gms:play-services:8.3.0'
    compile 'com.android.support:design:23.1.1'
    compile 'com.google.android.gms:play-services-maps:8.3.0'
}

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.s_ghanbari.m2">

    <uses-permission android:name="com.safecomp.googlemaptest.permission.MAPS_RECEIVE" />

    <permission
        android:name="com.safecomp.googlemaptest.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />

    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />



    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">


        <meta-data android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version"/>


        <activity
            android:name=".MapsActivity"
            android:label="@string/title_activity_maps">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

    <meta-data
        android:name="com.google.android.geo.API_KEY"
        android:value="AIzaSyDT6TWhjSIdFrWvR8n_whHAx4HJo3T9Yog" />


</manifest>

 --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.s_ghanbari.m2">

    <uses-permission android:name="com.safecomp.googlemaptest.permission.MAPS_RECEIVE" />

    <permission
        android:name="com.safecomp.googlemaptest.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />

    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <meta-data android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version"/>

        <activity
            android:name=".MapsActivity"
            android:label="@string/title_activity_maps">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

    <meta-data
        android:name="com.google.android.geo.API_KEY"
        android:value="AIzaSyDT6TWhjSIdFrWvR8n_whHAx4HJo3T9Yog" />

</manifest>