title: Error:(26) error: ' ' is incompatible with attribute android:icon (attr) reference
body: <p>I am trying to hide the status bar but decided not to do so, so i did back everything but this problem exist. </p>
  
  <p>errors:
  <strong>Error:(26) error: ' ' is incompatible with attribute android:icon (attr) reference.</strong></p>
  
  <p><strong>Error:(26) ' ' is incompatible with attribute android:icon (attr) reference.</strong></p>
  
  <p><strong>Error:failed processing manifest.</strong></p>
  
  <p><strong>Error:java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details</strong></p>
  
  <p><strong>Error:java.util.concurrent.ExecutionException: 
  com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details</strong></p>
  
  <p><strong>Error:com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details</strong></p>
  
  <p><strong>Error:Execution failed for task ':app:processDebugResources'.</strong></p>
  
  <p><strong>> Failed to execute aapt</strong></p>
  
  <p>this is the code of the main manifest </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example.jsoft.jcoreports"&gt;
  
      &lt;application
          android:allowBackup="true"
          android:icon="@mipmap/hotelb"
          android:label="JCore Reports"
          android:roundIcon="@mipmap/ic_launcher_round"
          android:supportsRtl="true"
          android:theme="@style/AppTheme.NoActionBar"&gt;
          &lt;activity android:name=".MainActivity"&gt;
  
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
  
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
          &lt;/activity&gt;
          &lt;activity
              android:name=".ActivityNew"
              android:label="  "
              android:icon=" "
              android:theme="@style/AppTheme.NoActionBar"&gt; &lt;/activity&gt;
      &lt;/application&gt;
  
  &lt;/manifest&gt;`
  </code></pre>
  
  <p>this the debug manifest </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example.jsoft.jcoreports"
      android:versionCode="1"
      android:versionName="1.0" &gt;
  
      &lt;uses-sdk
          android:minSdkVersion="16"
          android:targetSdkVersion="26" /&gt;
  
      &lt;application
          android:allowBackup="true"
          android:debuggable="true"
          android:icon="@mipmap/hotelb"
          android:label="JCore Reports"
          android:roundIcon="@mipmap/ic_launcher_round"
          android:supportsRtl="true"
          android:theme="@style/AppTheme.NoActionBar" &gt;
          &lt;activity android:name="com.example.jsoft.jcoreports.MainActivity" &gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
  
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
          &lt;/activity&gt;
          &lt;activity
              android:name="com.example.jsoft.jcoreports.ActivityNew"
              android:icon=" "
              android:label="  "
              android:theme="@style/AppTheme.NoActionBar" &gt;
          &lt;/activity&gt;
  
          &lt;meta-data
              android:name="android.support.VERSION"
              android:value="26.1.0" /&gt;
          &lt;meta-data
              android:name="android.arch.lifecycle.VERSION"
              android:value="27.0.0-SNAPSHOT" /&gt;
      &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p>how can i solve this problem?</p>