NWDI Issue - Cannot checkout missing file that was checked out exclusively

Hello, I'm getting error when I try to edit a file (mdmapi_assembly.pp) on my project.

This file was checked out exclusively on another computer, that's does not exist anymore (even it's owner lol).

This error appear on DTR Console:

EDIT (FAILED: server response: Conflict [(pre||post)-condition failed: x:cannot-checkout-exclusively-checkedout-resource]) mdmapi_assembly.pp (C:\......\_comp\def\mdmapi_assembly.pp)

Anyone can help me?

Thanks anyway!