Facebook Authorisation Error

WordPress: 3.9.1
SNAP: 3.3.9

I’m having troubling authorising my Facebook account through the SNAP plugin settings in the WordPress dashboard.

Each time I follow the instructions I end up with the following error:

Array
(
    [http_request_failed] => Array
        (
            [0] => SSL certificate problem, verify that the CA cert is OK. Details:
error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
        )

)

Has anyone else had this problem and know a solution?

https://ww.wp.xz.cn/plugins/social-networks-auto-poster-facebook-twitter-g/