Cannot modify header information – headers already sent

  • Hi,

    The back office return a white screen when i updated a post or page with the shortcode. The WP Debug returns the followings

    Warning: Cannot modify header information – headers already sent by (output started at xxx /plugins/fullscreen-galleria/galleria-fs.php:957) in xxx /wp-admin/post.php on line 197

    Warning: Cannot modify header information – headers already sent by (output started at xxx /plugins/fullscreen-galleria/galleria-fs.php:957) in xxx /wp-includes/pluggable.php on line 1210

    i think the issue is caused by using other Slider plugin such as “Meta Slider”. Could you check and see if there is anyway to fix it?

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