My Volume Inventory Report shows wrong sizes (Space Available is negativ?)
This problem is only by one volume; the other volumes shows there correct sizes.

The real available space is about 5 GB

Is there any solution to correct this

This is was the Report says:

Key Statistics
Total Subdirectories: 83,607
Total Files: 756,694
File Types: 1,912
Space In Use: 395,768 MB
Space Available: -17,592,183,944,060 MB
Available Space Changes:
Last Day: -17,592,186,044,487 MB
Last Week: -17,592,186,047,447 MB
Last Month: -17,592,186,049,527 MB
Estimated Months Left: 1,048,574