title: ERR_HTTP2_PROTOCOL_ERROR when I add Header to GET request
body: <p>Then I add header(access) to my GET request I recieve</p>
  <blockquote>
  <p>GET <a href="https://some.api.address/endpoint" rel="nofollow noreferrer">https://some.api.address/endpoint</a> net::ERR_HTTP2_PROTOCOL_ERROR xhr.js:210</p>
  </blockquote>
  <p>I use axios to send requests.
  Without header all work, but i cannot get data without access token.</p>
  <p>API written on PHP.
  I have set Access-Control-Allow-Headers in PHP.</p>
  <pre class="lang-php prettyprint-override"><code>header('Access-Control-Allow-Headers: Origin, Content-Type, X-Auth-Token, Region, Access');
  </code></pre>