Please help

181407:save: Step (1 of 5) for PID-8564: Save has been started on the client '********.com'.
174412:save: Step (2 of 5) for PID-8564: Running the backup on the client '********.com' for the save set 'pseudo_saveset'.
174424:save: Step (3 of 5) for PID-8564: Creating the snapshot for the selected save sets.
VSS OTHER: ERROR: VSS failed to process snapshot:
90108:save: Unable to save the SYSTEM STATE save sets: cannot create the snapshot.

174918:save: Step (3 of 5) for PID-8564: Unable to complete the backup. See the savegrp log to track the closure steps of the backup.
175023:save: Unable to back up the save set 'pseudo_saveset'.