title: How to fix - RuntimeException in Encrypter.php line 43
body: <p><strong>App.php - File</strong></p>
  
  <blockquote>
    <p>This is my App,php file</p>
  </blockquote>
  
  <pre><code>'key' =&gt; env('APP_KEY'),
  
  'cipher' =&gt; 'AES-256-CBC',
  </code></pre>
  
  <p><strong>.env - File</strong></p>
  
  <blockquote>
    <p>This is my .env file</p>
  </blockquote>
  
  <pre><code>APP_ENV=local
  APP_KEY=base64:CETuLOZZZi5QEEYXhyCO/O7l7fhM6LI5clvsT59cgTM=
  APP_DEBUG=true
  APP_LOG_LEVEL=debug
  APP_URL=http://localhost
  
  DB_CONNECTION=mysql
  DB_HOST=localhost
  DB_PORT=3306
  DB_DATABASE=ads
  DB_USERNAME=root
  DB_PASSWORD=null
  
  
  
  PUSHER_APP_ID=
  PUSHER_KEY=
  PUSHER_SECRET=
  </code></pre>
  
  <p><strong>Error was:</strong></p>
  
  <pre><code>&gt; RuntimeException in Encrypter.php line 43: The only supported ciphers
  &gt; are AES-128-CBC and AES-256-CBC with the correct key lengths.
  </code></pre>
  
  <blockquote>
    <p>Developers please help me to solve this problems. 
    Thanks</p>
  </blockquote>