idevicebackup2 restore error code 1 and 102

hi, all
i try to use idevicebackup2 to restore some backup files. during the file sending process it seem to be ok. but i get two errors as follows.
is there anyone can tell me how to solve them ?
thanks

---------------------- log as follows -------------------------

Started "com.apple.mobilebackup2" service on port 49241.
Negotiated Protocol Version 2.1
Starting Restore...
Restoring system files: Yes
Rebooting after restore: No
Don't copy backup: Yes
Preserve settings of device: No
Remove items that are not restored: No
Backup password: No
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/Status.plist' (189 Bytes)
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/Manifest.plist' (1.9 kB)
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/Manifest.mbdb' (1.2 kB)
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/ec80ef519efce28ded74d7c5ece228
37dbe8e2c4' (9.4 kB)
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/12909165bfc2bf52e121bb736aea7e
7286837511' (149 Bytes)
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/6f6b8a94c311c4cefbfedb5484f9eb
b28d2c0f79' (22.6 kB)
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/6d41a1e4fa4152c2a6b028226c887c
773c927204' (35.3 kB)
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/20ff19f502432738ce71004963acf5
9b3c45beeb' (20.3 kB)
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/3edb7be75aa4e966056f1c8e5e2de4
76c9ae063d' (9 Bytes)
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/3ece17d32086dbb6e1146da93212d5
25a1a26452' (12.1 kB)
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/5fac11ae8f7c1d52e61f5038122dcd
389fec2f6b' (375 Bytes)
[==================================================] 100% Finished ErrorCode 1: Unexpected keychain backup protection class: 4 at path "/var/.backu
p.i/var/Keychains/keychain-backup.plist" (MBErrorDomain/1)
Restore Failed (Error Code 1).

and

Started "com.apple.mobilebackup2" service on port 49186.
Negotiated Protocol Version 2.1
Starting Restore...
Restoring system files: Yes
Rebooting after restore: No
Don't copy backup: Yes
Preserve settings of device: No
Remove items that are not restored: No
Backup password: No
Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/Status.plist' (189 Bytes)
[==================================================] 100% Finished Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/Manifest.plist' (1.9 kB)
[==================================================] 100% Finished Sending 'a13a74a81028502a12311b7ff1ef23ee2144ecad/Manifest.mbdb' (333 Bytes)
[==================================================] 100% Finished ErrorCode 102: symlink error: Invalid argument (22) at path "/var/.backup.i/var/
mobile/Media/Recordings/.haxx/timezone" (MBErrorDomain/102)
Restore Failed (Error Code 102).