Wordpress Plugin - cURL is not installed on this server
<p>I'm getting the following message in a Wordpress plugin - OneSignal.</p>

<p><code>OneSignal Push: cURL is not installed on this server. cURL is required to send notifications. Please make sure cURL is installed on your server before continuing.</code></p>

<p>I'm running WordPress 4.6.1 on LEMP stack - Ubuntu 14.04.5, Php5.5.9</p>

<p>As per few suggestions from Stackoverflow, I've installed php5-curl and have the curl.so file in the extension_dir. I've added the line <code>extension=curl.so</code> in php.ini file in /etc/php5/fpm</p>

<p>Still the error doesn't seem to go away. What needs to be done here?</p>