Incremental Backup Recovery - Error 173

I am in need to restore an incremental backup in cbu format, but I’m having troubles.

The backup should consist of only two files, but when i try to recover the last one, it tries to look for a missing base file.

On the other hand, the first one should be a full backup, but it’s opened as incremental, and it still cant find a base file.

Is there any way to know what is the filename of the base comodo is looking for?

Is there any way to recover at least what’s stored in the partial incremental backup from these two files?

There are over 12gigs of sensible data in it, and I’m desperate to recover it.