title: Amazon API Gateway 403 Forbidden
body: <p>Recently, I used the Amazon API Gateway .I created an api ,but the API failed all the time.
  At the beginning,I didn't add request headers.The result that API responsed is as follows:    </p>
  
  <pre><code>HTTP/1.1 403 Forbidden    
  {"message":null, "type": "ACCESS_DENIED", "status":"", "other":"" }
  </code></pre>
  
  <p>Then ,I added a header which named host,the result changed.</p>
  
  <pre><code>HTTP/1.1 403 Forbidden
  {"message":"Forbidden"}
  </code></pre>
  
  <p>I didn't use other AWS.
  I set the authorization is none and the  API key required is false.
  <a href="https://i.stack.imgur.com/Rq3kv.png" rel="nofollow noreferrer">enter image description here</a>
  Could you help me? 
  Thanks！</p>