cmplz-custombanner-html.php

/**
 * Override cookiebanner template html
 * @param string $html
 *
 * @return string
 */

function cmplz_custom_banner_file($path, $filename){
  if ($filename === 'cookiebanner.php' ) {
    error_log("change path to ".trailingslashit(WPMU_PLUGIN_DIR).'cookiebanner/cookiebanner.php');
    return trailingslashit(WPMU_PLUGIN_DIR).'cookiebanner/cookiebanner.php';
  }
  return $path;
}

add_filter('cmplz_template_file', 'cmplz_custom_banner_file', 10, 2);