Ошибка "Error inflating class android.support.design.widget.Navigation­View"

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.v4.widget.SwipeRefreshLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="@+id/mainWeb"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</android.support.v4.widget.SwipeRefreshLayout>
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:menu="@menu/main_menu"
app:headerLayout="@layout/nav_header"/>
</android.support.v4.widget.DrawerLayout>

<menu xmlns:android="http://schemas.android.com/apk/res/android">
 
<item
android:id="@+id/news"
android:title="..."/>
 
<item
android:id="@+id/forum"
android:title="..."/>
 
<item
android:id="@+id/chat"
android:title="..."/>
 
<item
android:id="@+id/vip"
android:title="..."/>
 
<item
android:id="@+id/gold"
android:title="..."/>
 
<item
android:id="@+id/vk"
android:title="..."/>
 
<item
android:id="@+id/exit"
android:title="..."/>
</menu>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
 
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Text"/>
 
</LinearLayout>

apply plugin: 'com.android.application'
 
android {
    compileSdkVersion 21
    buildToolsVersion "21.1.0"
 
    defaultConfig {
        applicationId "warkings.su"
        minSdkVersion 14
        targetSdkVersion 21
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
 
dependencies {
    compile 'com.android.support:design:+'
    compile 'com.android.support:support-v4:+'
    compile fileTree(dir: 'libs', include: ['*.jar'])
}