Error. Cannot open an empty file

I have a project i was working on that .
And when project completed i was export that and the video of that open .
And now i need so badly my project
But this error: error parsing auxiary file .showed every time .
So what should i do?
This file disappeared‌ for ever?

I noticed in the other thread that you are not able to follow the
directions to restore the last backup.

Please contact support to connect to your system to assist.