I am using Post Grid to display a custom post type. The majority of posts with this type don't have a featured image, however the grid only displays those with a featured image.
Is there somewhere in the configuration to change this or must all posts have images?
Welcome to our forum.
not sure if you want to exclude those post doesn't have the featured image, then it not possible right now our plugin. but there is an option to display empty thumbnail these post don't have featured image, it will show a placeholder image, https://imgur.com/a/mwOuXLv
you need to check the option
Layout settings > Empty thumbnail
I hope that helps.