title: The following classes could not be instantiated android.support.v7.widget.AppCompatTextView
body: <p>Here are my dependencies of build.gradle(app)</p>
  
  <pre><code>compile fileTree(include: ['*.jar'], dir: 'libs')
  androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', 
  {
      exclude group: 'com.android.support', module: 'support-annotations'
  })
  compile 'com.firebaseui:firebase-ui-auth:2.3.0'
  compile 'com.android.support:appcompat-v7:26.0.1'
  compile 'com.android.support:design:26.0.1'
  compile 'com.android.support:support-vector-drawable:26.0.1'
  compile 'com.android.support.constraint:constraint-layout:1.0.2'
  testCompile 'junit:junit:4.12'
  </code></pre>
  
  <p>Here is a part of build.gradle(Project)</p>
  
  <pre><code>allprojects {
      repositories {
          jcenter()
          maven { url "https://maven.google.com" }
      }
  }
  </code></pre>
  
  <p>When I am going to any <code>xml</code> file it is showing me an error **The following classes could not be instantiated:</p>
  
  <blockquote>
    <p> android.support.v7.widget.AppCompatTextView (Open Class, Show Exception, Clear Cache)**</p>
  </blockquote>
  
  <p>I have updated Android Studio to the latest still it shows the error.</p>
  
  <p>I am unable to figure out the problem.Thank you</p>