Fatal error: Uncaught Error: Interface "AWeberOAuthAdapter" not found in /home/sites/14b/d/de45cfcc2b/public_html/wp-content/plugins/woocommerce-aweber-newsletter-subscription/includes/libraries/aweber-api/oauth_application.php:57 Stack trace: #0 {main} thrown in /home/sites/14b/d/de45cfcc2b/public_html/wp-content/plugins/woocommerce-aweber-newsletter-subscription/includes/libraries/aweber-api/oauth_application.php on line 57