Gallery pictures suddenly not showing?

Help! my WordPress site has been running with no issues for around a month. Then suddenly all the galleries are not showing.

I am using the Estate Theme and Pagebuilder Gallery.

Example page: https://www.smpartizan.com/?page_id=114

I have entered a lot of photos and can still see them there when I go to edit a gallery but the resultant page does not display a gallery?

Any ideas would be appreciated as this is my business site now.