title: AH02429: response header name contains invalid characters
body: <p>I am using Apache/2.4.25 (Ubuntu) and self sighed certificate for ssl.I am getting this error in error.log.</p>
  <blockquote>
  <p>[http:error] [pid 17439:tid 140353432684288] [client
  106.51.133.147:21780] AH02429: Response header name 'Strict-Transport-Security ' contains invalid characters, aborting
  request</p>
  <pre><code>ServerName mystaging.cloudapp.net 
  Header always set Strict-Transport-Security &quot;max-age=31536000; includeSubDomains; preload&quot;
  </code></pre>
  </blockquote>