Updating your www/config.php is recommended, see: https://github.com/nZEDb/nZEDb/wiki/Setting-up-openssl

Allow options for properly handling stream resource and CURL handle SSL/TLS remote openssl certificate verification.

In PHP 5.6 streams set the verify_peer to true by default, which causes tls/ssl streams to fail if a ca file is not found to match the remote cert file or if the remote cert file is improper.

This pull requests adds the ability for the admin to disable verifying certificates or adding an alternate path to certificate files which fixes the aforementioned issues.

I believe CURL was enforcing this prior to 5.6, although in nZEDb we were forcing it to disabled.