مشکل تولبار در اندورید های پایین

سلام

من یه برنامه نوشتم تو اندروید بالای 5 اجرا میشه ولی اندروید پایین 5 خطا میده . رفتم دیدم خطا از تولبار میگیره علتش چیه؟

کد تولبار

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#f22"
    android:theme="@style/ThemeOverlay.AppCompat.Dark"
    android:elevation="4dp"

    >

</android.support.v7.widget.Toolbar>

کد لایه

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context="com.example.mostafanazarband.sajma.agahi_main2"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"

    android:layout_height="match_parent">
    <LinearLayout

        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        >
        <include
            android:id="@+id/tool_bar"
            layout="@layout/app_bar2"
            ></include>
        <RelativeLayout
            android:layout_below="@+id/app_bar"
            android:layout_width="match_parent"
            android:layout_height="match_parent"

            >



        </RelativeLayout>

    </LinearLayout>



</android.support.v4.widget.DrawerLayout>

کد کلاس

public class agahi_main2 extends ActionBarActivity  {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_agahi_main2);

    }

خطا

06-07 00:55:20.355    3314-3314/? E/VdcInflateDelegate﹕ Exception while inflating <vector>
    org.xmlpull.v1.XmlPullParserException: Binary XML file line #17<vector> tag requires viewportWidth > 0
            at android.support.graphics.drawable.VectorDrawableCompat.updateStateFromTypedArray(VectorDrawableCompat.java:535)
            at android.support.graphics.drawable.VectorDrawableCompat.inflate(VectorDrawableCompat.java:472)
            at android.support.graphics.drawable.VectorDrawableCompat.createFromXmlInner(VectorDrawableCompat.java:436)
            at android.support.v7.widget.AppCompatDrawableManager$VdcInflateDelegate.createFromXmlInner(AppCompatDrawableManager.java:708)
            at android.support.v7.widget.AppCompatDrawableManager.loadDrawableFromDelegates(AppCompatDrawableManager.java:348)
            at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:188)
            at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:181)
            at android.support.v7.widget.TintTypedArray.getDrawable(TintTypedArray.java:67)
            at android.support.v7.widget.Toolbar.<init>(Toolbar.java:298)
            at android.support.v7.widget.Toolbar.<init>(Toolbar.java:229)
            at java.lang.reflect.Constructor.constructNative(Native Method)
            at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
            at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:226)
            at android.support.v7.app.AppCompatViewInflater.createViewFromTag(AppCompatViewInflater.java:175)
            at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:146)
            at android.support.v7.app.AppCompatDelegateImplV7.createView(AppCompatDelegateImplV7.java:984)
            at android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:1043)
            at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675)
            at android.view.LayoutInflater.parseInclude(LayoutInflater.java:807)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:736)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:749)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
            at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280)
            at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
            at com.example.mostafanazarband.sajma.agahi_main2.onCreate(agahi_main2.java:15)
            at android.app.Activity.performCreate(Activity.java:5104)