single post not loading

Hello, I’m using Ease theme and I’m totally new to wordpress and coding — besides I’m working on a project started by someone else whom I can’t reach anymore.

It was everything working fine today and all of a sudden I noticed that the single posts weren’t loading — just the header and its widgets appear on the single post page.

I tried to preview other themes and they worked. Would someone have a clue where (in which file or what kind of code) I can try to solve it? Very didatic explanations are really welcome…!

The site is bcubico.com

Thanks a lot,

Priscila