Hello,
First, sorry for the typo. OD should be OS (operating system) and LO is LibreOffice. Don’t need currently but in future always include as many times it helps to resolve a problem.
Have now examined your file. Unfortunately, there are two files missing for the database - data and backup. Without the data file there is no recovery. Please also insure you are actually opening the correct file. I’m relatively certain you have but with all your distraction it may be worth mentioning.
Certainly had something to do with the loading process but cannot point to what exactly it could be.
This is all that can be suggested. If the Base file is still open, close but if prompted do NOT save. Open the Base file again and hope you are prompted for a recovery. Even if not prompted, check for table data. If not, only a backup will recover data.
Any chance you had set the option to create backup copy turned on? This may have saved a copy in the user profile.