Hello, just passing there,
Had the same problem. I ivestigated and noticed that if :
1/ You assign a custom image size in WPBakery elements (like “324×324”) -> What should normally happen is that the image size will be generated itself (if not already done) when you will visit the page for the first time (check your FTP/upload file to confirm).
Alternatively what you can do is assing size which already exist like “medium”, large”, “thumbnail”..
Important note : custom sizes generated by WP Bakery are not deleted when you delete the image from the Media library. You will have to delete them manually. For that i suggest you to use already existing size generated by wordpress.
