Ubuntu inaccessible in VirtualBox? [closed]

I am running Ubuntu desktop in Oracle VirtualBox and it suddenly says that it is inaccessible from last login

The given path '{c2545323-feb8-4b7b-ab00-d4c9c8eb2a85}' is not fully qualified.
Result Code:
VBOX_E_FILE_ERROR (0x80BB0004)
Component:
MediumWrap
Interface:
IMedium {ad47ad09-787b-44ab-b343-a082a3f2dfb1}
Callee:
IVirtualBox {d0a0163f-e254-4e5b-a1f2-011cf991c38d}
Callee RC:
VBOX_E_OBJECT_NOT_FOUND (0x80BB0001)

In the root there is only ubuntu.vbox-prev file and ubuntu.vbox file.

I have important files in it. How can I regain access?

2 Sorted by: Reset to default