Blank search and category results

Hi all, My site has suddenly stopped displaying results for search’s and category posts. no recent plugins have been installed before the issue but i do use live composser to build the site and was the last thing i clicked on before the issue occured.

https://www.fulltimecaravanning.com.au/ is the home page and it displays all posts , tags, and categories as designed. BUt if you click on the “blog posts” menu item and choose a category, all that shows is the header and footer. Same if you enter a search query like ” solar” it returns only a footer and header no content.
The sidebar on the home page shows me that i have x amount of categorised posts so i know they exist… just can’t see the posts via the menu tree.

Not to sure where to start as i’m not a php guru but believe the archives and category listing is more a default wordpress thing than a live composer option ?. I’ve not found the issue via google yet so appreciate and guidance