Lots of errors in urbackup.log on server

Team,

I have a lot of errors in the server-log about 3 Windows 10 clients (see below).
The one indicated as Pandora is giving me the most headaches because of its VSS-errors.

The N:\Documents is a symlink to a drive mapping N:.
Which in return is used as offline folder.

Any one in a position to share some light on what is happening?
And what to do about these errors?

Thank you - Will

=====

Environment: - Server: Linux 20.04.2 | URbackup server 2.4.13 - Client: Windows 10 20H2 | URbackup client 2.4.11 - OS-es are all updated to the latest-and-greatst
2021-03-08 12:43:48: WARNING: Info not found at 'f:' - reindexing
2021-03-08 13:24:45: ERROR: Error while enumerating user "NT AUTHORITY\SYSTEM" groups: 2453
2021-03-08 13:24:57: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-08 13:24:57: ERROR: GetVolumePathName(dir, volume_path, MAX_PATH) failed in ChangeJournalWatcher::watchDir for dir n:\documents\
2021-03-08 14:23:20: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-08 14:23:20: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-08 14:23:25: ERROR: Error opening volume . The filename, directory name, or volume label syntax is incorrect. (code: 123)
2021-03-08 14:23:29: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-09 09:09:16: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-09 09:09:16: ERROR: GetVolumePathName(dir, volume_path, MAX_PATH) failed in ChangeJournalWatcher::watchDir for dir n:\documents\
2021-03-09 09:10:28: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-09 09:11:28: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-09 09:11:28: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-09 09:11:28: ERROR: GetVolumePathName(dir, volume_path, MAX_PATH) failed in ChangeJournalWatcher::watchDir for dir n:\documents\
2021-03-09 09:11:28: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-09 09:11:32: ERROR: backupcom->DeleteSnapshots(set_last ? scs.ssetid : scs.vssid, set_last ? VSS_OBJECT_SNAPSHOT_SET : VSS_OBJECT_SNAPSHOT, TRUE, &dels, &ndels) failed. VSS error code VSS_E_OBJECT_NOT_FOUND
2021-03-09 09:11:32: WARNING: Error deleting snapshot set {D76EE55F-DF6C-4CBD-B9DB-76EB9AE17F63}
2021-03-09 09:11:35: ERROR: Error opening volume . The filename, directory name, or volume label syntax is incorrect. (code: 123)
2021-03-09 09:11:40: WARNING: Error getting volume path for \
2021-03-09 09:11:40: WARNING: Error getting volume path for \
2021-03-09 19:01:18: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-09 21:12:18: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-09 21:12:18: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-09 21:12:19: ERROR: GetVolumePathName(dir, volume_path, MAX_PATH) failed in ChangeJournalWatcher::watchDir for dir n:\documents\
2021-03-09 21:12:19: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-09 21:12:25: ERROR: backupcom->DeleteSnapshots(set_last ? scs.ssetid : scs.vssid, set_last ? VSS_OBJECT_SNAPSHOT_SET : VSS_OBJECT_SNAPSHOT, TRUE, &dels, &ndels) failed. VSS error code VSS_E_OBJECT_NOT_FOUND
2021-03-09 21:12:25: WARNING: Error deleting snapshot set {E980D2FF-E8AA-440B-BEF8-0DE9BB247CC7}
2021-03-09 21:12:28: ERROR: Error opening volume . The filename, directory name, or volume label syntax is incorrect. (code: 123)
2021-03-09 21:12:33: WARNING: Error getting volume path for \
2021-03-09 21:12:33: WARNING: Error getting volume path for \
2021-03-10 09:01:13: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-10 09:01:14: ERROR: GetVolumePathName(dir, volume_path, MAX_PATH) failed in ChangeJournalWatcher::watchDir for dir n:\documents\
2021-03-10 09:02:31: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-10 09:13:31: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-10 09:13:31: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-10 09:13:31: ERROR: GetVolumePathName(dir, volume_path, MAX_PATH) failed in ChangeJournalWatcher::watchDir for dir n:\documents\
2021-03-10 09:13:32: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-10 09:13:36: ERROR: backupcom->DeleteSnapshots(set_last ? scs.ssetid : scs.vssid, set_last ? VSS_OBJECT_SNAPSHOT_SET : VSS_OBJECT_SNAPSHOT, TRUE, &dels, &ndels) failed. VSS error code VSS_E_OBJECT_NOT_FOUND
2021-03-10 09:13:36: WARNING: Error deleting snapshot set {00E7AE44-5A28-41AB-8AC1-D1E0939240E2}
2021-03-10 09:13:38: ERROR: Error opening volume . The filename, directory name, or volume label syntax is incorrect. (code: 123)
2021-03-10 09:13:42: WARNING: Error getting volume path for \
2021-03-10 09:13:42: WARNING: Error getting volume path for \
2021-03-10 10:31:32: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-10 10:34:15: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-10 10:34:15: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-10 10:34:15: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-10 10:34:15: ERROR: GetVolumePathName(dir, volume_path, MAX_PATH) failed in ChangeJournalWatcher::watchDir for dir n:\documents\
2021-03-10 10:34:15: ERROR: backupcom->DeleteSnapshots(set_last ? scs.ssetid : scs.vssid, set_last ? VSS_OBJECT_SNAPSHOT_SET : VSS_OBJECT_SNAPSHOT, TRUE, &dels, &ndels) failed. VSS error code VSS_E_OBJECT_NOT_FOUND
2021-03-10 10:34:15: WARNING: Error deleting snapshot set {97B22222-AC2A-425D-902F-392BE34CB3B8}
2021-03-10 10:34:18: ERROR: Error opening volume . The filename, directory name, or volume label syntax is incorrect. (code: 123)
2021-03-10 10:34:22: ERROR: Could not open path in os_get_final_path for "N:\Documents"
2021-03-10 10:57:15: ERROR: backupcom->DeleteSnapshots(set_last ? scs.ssetid : scs.vssid, set_last ? VSS_OBJECT_SNAPSHOT_SET : VSS_OBJECT_SNAPSHOT, TRUE, &dels, &ndels) failed. VSS error code VSS_E_OBJECT_NOT_FOUND
2021-03-10 10:57:15: WARNING: Error deleting snapshot set {4817AD77-CD3C-4C85-87D8-74D1AEE53CAD}
2021-03-10 13:13:42: ERROR: Could not open path in os_get_final_path for "N:\Documents"