Sometimes, the following warning may be seen when running an extension
that uses cURL on Windows.
SSL certificate problem: unable to get local issuer certificate
This is due to the fact that
libcurl shipped with PHP is built
without the support for the Windows certificate store, and so cURL
cannot use it.
Download a current certificate
Place the certificate file anywhere inside the extension folder
For example, it can be placed inside the
Add the path to the certificate file in cURL options array