Fatal error: Uncaught Error: Call to undefined function PaymentPlugins\add_filter() in /home/dcg/public_html/wp-content/plugins/woo-stripe-payment/includes/admin/meta-boxes/class-wc-stripe-admin-meta-box-product-data.php:15 Stack trace: #0 /home/dcg/public_html/wp-content/plugins/woo-stripe-payment/includes/admin/meta-boxes/class-wc-stripe-admin-meta-box-product-data.php(102): PaymentPlugins\WC_Stripe_Admin_Meta_Box_Product_Data::init() #1 {main} thrown in /home/dcg/public_html/wp-content/plugins/woo-stripe-payment/includes/admin/meta-boxes/class-wc-stripe-admin-meta-box-product-data.php on line 15