I am getting an error when i am trying to open my oracle vm virtual box
The error is as follows
Runtime error opening 'C:\Users\S Pavan Kumar Reddy\VirtualBox VMs\Windows\Windows.vbox' for reading: -102 (File not found.).
E:\tinderbox\win-rel\src\VBox\Main\src-server\MachineImpl.cpp (long __cdecl Machine::registeredInit(void)).
So please anybody can help me to solve my problem or anybody can say how to back up the data present in my virtual box because my whole project is rest in that virtual box so please help me out to solve my problem