[NAME].k, Looks like a VSS error. So check if all the writers are stable using `vssadmin list writers` and may be check the space on the C drive as well. Moreover some additional information like what is failing, any recent changes, if this is a new configuration also could help us help you 
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'.
Backup failed with error