Function WP_Interactivity_API::evaluate was called incorrectly. Namespace or reference path cannot be empty
Assuming that your search block is inside the group block, you need to set the attribute via $processor->set_attribute( ‘data-wp-interactive’, ‘wpse/local-search’ ); inside your wpse_locals_filter_search function as well, since inner blocks are processed before the outer blocks (see line 11 below): function wpse_locals_filter_search( $block_content, $block ) { if ( isset( $block[‘attrs’][‘className’] ) && ‘wpse-local-filter’ === $block[‘attrs’][‘className’] … Read more