Disable the button! add_new_attribute

Disable the button! Why? We need this button. Please fix it. Thank you for your good plugin

<?php
$fields = wvs_taxonomy_meta_fields( $attribute_taxonomy->attribute_type );

if ( ! empty( $fields ) ): ?>
<button disabled=”disabled” class=”button fr plus wvs_add_new_attribute” data-dialog_title=”<?php printf( esc_html__( ‘Add new %s’, ‘woo-variation-swatches’ ), esc_attr( $attribute_taxonomy->attribute_label ) ) ?>”><?php esc_html_e( ‘Add new’, ‘woo-variation-swatches’ ); ?></button>
<?php else: ?>
<button class=”button fr plus add_new_attribute”><?php esc_html_e( ‘Add new’, ‘woo-variation-swatches’ ); ?></button>
<?php endif; ?>
<?php