FCM token missing : <p>I'm trying to test FCM using Postman, but I always get the following error even the FCM token is there. I got the token in the Cloud Messaging tab: Firebase Cloud Messaging token.</p>

<pre><code>&lt;HTML&gt;
&lt;HEAD&gt;
    &lt;TITLE&gt;The request was missing an Authentification Key (FCM Token). Please, refer to section &amp;quot;Authentification&amp;quot; of the FCM documentation, at https://firebase.google.com/docs/cloud-messaging/server.&lt;/TITLE&gt;
&lt;/HEAD&gt;
</code></pre>

<p>Here is what I send.</p>

<pre><code>POST /fcm/send HTTP/1.1
Host: fcm.googleapis.com
Cache-Control: no-cache
Postman-Token: 9109eb13-245f-0786-21a5-6207f5426b44

Content-Type:application/json
Authorization:key=AAAAfnYrKvU:APA91bFwgeM3zuFId6UDzvIHk9qZ3lKHnX-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
{  "data": {     "message": "This is a Firebase Cloud Messaging Topic Message!",    } }:
</code></pre>
