does not save

Sure, I am using a theme called Fictioneer. It has a post type called “Stories”. I need to change several fields in some of the story rows. I selected the category i wanted “Nonfiction Books”, then modified two fields from 0 to 1 and added a custom field which is intended to be custom css code.

So far so good.

I tried to save (there are around 40 rows). The save icon just spins and does nothing.