Plugin error

Here’s the blank page error I’m getting when activating this plugin:

Warning: SoapClient::SoapClient(): I/O warning : failed to load external entity “/home/paramedicquebec/public_html/wp-content/plugins/purolator-woocommerce-shipping-method//api/production/EstimatingService.wsdl” in /home/paramedicquebec/public_html/wp-content/plugins/purolator-woocommerce-shipping-method/includes/ma-pu-shipping-configuration.php on line 466

Fatal error: SOAP-ERROR: Parsing WSDL: Couldn’t load from ‘/home/paramedicquebec/public_html/wp-content/plugins/purolator-woocommerce-shipping-method//api/production/EstimatingService.wsdl’ : failed to load external entity “/home/paramedicquebec/public_html/wp-content/plugins/purolator-woocommerce-shipping-method//api/production/EstimatingService.wsdl” in /home/paramedicquebec/public_html/wp-content/plugins/purolator-woocommerce-shipping-method/includes/ma-pu-shipping-configuration.php on line 466