output buffer error

Hi! There seems to be an error in your code, within this file:
wp-content\plugins\post-grid\includes\classes\class-admin-notices.php
from line 33. you have a similar code structure:

if ($screen->id == 'edit-post_grid_layout' ... ) :

	ob_start();

	if ( ... ) :
        ...
	endif;

endif;

echo(ob_get_clean());

The problem with this is, that you have “ob_get_clean” outside the “if”, where “ob_start” is. This way when you won’t go inside that “if”, you are closing the output buffer which wasn’t started by you. So the fix I’m suggesting is this:

if ($screen->id == 'edit-post_grid_layout' ... ) :

	ob_start();

	if ( ... ) :
        ...
	endif;

	echo(ob_get_clean());

endif;

to move the “ob_get_clean” inside the “if” too. Would it be possible for you to modify your code to this?

If you need a test, you could use for example this code within the functions.php file of your theme:

add_action('admin_notices', 'start_test', 1);
add_action('admin_notices', 'end_test', 11);

function start_test() {
	ob_start();
}

function end_test() {
	ob_get_clean();
}

and visit a page, where your “if” doesn’t runs, like in the wp-admin area the Posts or Plugins page. This code will mess up the page, until the fix is done.