trektor

Hi, replace content in line number 48 (file wp-content/plugins/back-in-stock-notifier-for-woocommerce/includes/frontend/class-product.php) the old line :

echo do_shortcode( $this->display_subscribe_box( $product, array(), $display_filter ) );

with:

echo do_shortcode( $this->display_subscribe_box( $product, array(), $display_filter ) ?? '');