Log errors in case the file writing fails

An error message is written to the log including the file that was not written to and the stringified exception.

plugins/RemovableDriveOutputDevice/RemovableDriveOutputDevice.py

@@ -63,8 +63,10 @@ class RemovableDriveOutputDevice(OutputDevice):
             self._writing = True
             job.start()
         except PermissionError as e:
+            Logger.log("e", "Permission denied when trying to write to %s: %s", file_name, str(e))
             raise OutputDeviceError.PermissionDeniedError() from e
         except OSError as e:
+            Logger.log("e", "Operating system would not let us write to %s: %s", file_name, str(e))
             raise OutputDeviceError.WriteRequestFailedError() from e
 
     def _onProgress(self, job, progress):