I am trying to add a second button called "pay online" on a single product page with the Custom Fields Plugin, but I am getting this error/output:
You can also see the problem following this link: Here
The theme is "Mixtape", could this maybe be some plugin conflic with the theme?
here is mistake in variable.php
<form class="variations_form cart" action="<?php echo esc_url( apply_filters( 'woocommerce_add_to_cart_form_action', $product->get_permalink() ) ); ?>" method="post" enctype='multipart/form-data' data-product_id="<?php echo absint( $product->get_id() ); ?>" data-product_variations="<?php echo htmlspecialchars( wp_json_encode( $available_variations ) ); // WPCS: XSS ok. ?>"> <?php do_action( 'woocommerce_before_variations_form' ); ?>