When you try to verify API token, You may get "Missing parameter oauth_token.” 

This is because of HTTP_AUTHORIZATION not allowed. So, you need to add below code on your htaccess file this file Located on your project main root folder.

RewriteEngine On

RewriteCond %{HTTP:Authorization} ^(.*)

RewriteRule ^(.*) - [E=HTTP_AUTHORIZATION:%1]

And try procedure from start.