When adding a new post grid or editing an existing one. I get the following error in the console window.
"Failed to load resource: the server responded with a status of 500 (Internal Server Error)"
and no part of the post grid options can be interacted with and therefore no post grid can be created.
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Please exclude the post id where you are displaying post grid, i mean add the post id where you use post grid shortcode under excluded post ids under query post option.