Uncaught Error: syntax error, unexpected 'add_filter' (T_STRING) in /home/zabawkus/public_html/wp-content/plugins/polt-wc-flexible-price-mod/polt-wcflexprice.php on line 14

• require_once()
  wp-config.php:108
• require_once()
  wp-load.php:37
• require_once()
  wp-blog-header.php:13
• require()
  index.php:17