laipower/wp-content/plugins/wp-piwik/config.php

<?php

/******************************************************
 * Configure WP-Piwik Logger
 * 0: Logger disabled
 * 1: Log to screen
 * 2: Log to file (logs/YYYYMMDD_wp-piwik.log)
 ******************************************************/
define ( 'WP_PIWIK_ACTIVATE_LOGGER', 0 );