SSL certificate problem: unable to get local issuer certificate + woocommerce-gateway-paypal-express + wordpress 4.4

WooCommerce is an open source e-commerce plugin for WordPress. It is designed for small to large-sized online merchants using WordPress. Launched on September 27, 2011, the plugin quickly became popular for its simplicity to install and customize and free base product. WooCommerce has attracted significant popularity because the base product, […]