Post count: 2689
Hi Erin,
I have checked your site and the problem is because of you choose post type Gallery but no image selected: https://cl.ly/0Y2O3R3l1x0N
You need to add images to Galley or just pick Standard post type instead. I changed one of your post here: http://sg703.com/clients/bigShot2/seether-fort-rock-2017/
Let me know if you have more questions.
Thank you