InDesign won't save, save as, export, etc.

Hi, in the past it helps for me to delete to local caches content, while InDesign shows this problem.

On macOS it path is here: ~/Library/Caches/Adobe InDesign

Try creating a new document of the same page sizes and same margins.

On the troubled document go to the pages panel and select all the page s- and use Move Pages from the submenu in the top right corner.

Select the target document as the location - which is your new file.

Then once all the pages move over - see if you can save it from the new document.

On what drive do you save?