The text in my odt file disappeared!!! The formatting is lost too!

I used a few shapes in my document which are still around, but all the text seems to have gone, even the text type inside the shapes. When I tried to convert the file to pdf to check if the text is still missing, there is no text in the dialog boxes either! I can’t see the folder names, can’t choose file-formats, or even know where the ‘save’ button is! What’s going on? Can I get my file back?

UPDATE: I tried opening the file in my phone through Word. The formatting is off, but the text is still there. So I’m guessing there’s something wrong with LibreOffice?

No way to tell without the document.

Oh dear! Now what do I do?

Please provide the document if possible. Put it on a file sharing service, and post a link here.