trouble opening file

hi, my computer suddenly crashed and i wasn’t able to save my file completely. when i went to my documents, i saw a file .~lock.file.odt#, and when i opened the file, it only contains:

,andre,fjodiann,27.08.2018 21:46,file:///home/andre/.config/libreoffice/4;

what should I do?

You can safely delete it. A lock file is made by LibreOffice to ensure that the real document can’t be opened for editing by another program. It’s deleted when the file is closed normally, that’s why you rarely see such files.