Need Help

I keep getting this error:
Warning: session_start(): Cannot send session cache limiter – headers already sent (output started at /home/z180/public_html/wp-content/plugins/station-pro/classes/player_scripts.class.php:66) in /home/z180/public_html/wp-content/themes/yoo_vida_wp/warp/systems/wordpress/src/Warp/Wordpress/Helper/SystemHelper.php on line 535