ADME Export error

Hi All,

We are getting the following export error while exporting data from Staging space to Target Avamar/DD.

CMD\: C:/progra~1/avs/bin/avtar.exe -c --hfsaddr=fshavautil.xyz.com --ddr --ddr-index=1 n/a  --freezemethod=none --id=***** --password=***** --acnt=/ADME/avamigsrv.xyz.com 

avtar Info <5551>: Command Line: C:\progra~1\avs\bin\avtar.exe -c --server=fshavautil.xyz.com --label=ADME-ps360 --ddr --ddr-index=1 --freezemethod=none --id=MCUser --password=**************** --account=\ADME\avamigsrv.xyz.com n\a

avtar Info <7977>: Starting at 2017-09-07 16:19:13 Eastern Daylight Time [avtar Jul 30 2015 02:42:08 7.2.100-401 Windows Server 2008 R2 Standard Server Edition Service Pack 1 64-bit-AMD64]

avtar Info <10793>: Single Instance Store Groveler Service NOT installed - WSS SIS Manager will not be started.

avtar Info <7324>: Volume Type for "C:\" is "NTFS", Supports Compression=1, Encryption=1, ACLS=1, DataStreams=1, Reparse=1, Sparse=1, Hardlinks=1

avtar Info <5946>: File system character encoding is 65001 (UTF-8).

avtar Info <8940>: Starting back up at 2017-09-07 16:19:13 Eastern Daylight Time as "NT AUTHORITY\SYSTEM" on "avamigsrv" (2 CPUs) [7.2.100-401]

avtar Info <18833>: Volume "\\?\Volume{8a1a1d18-7b40-11e4-a47d-806e6f6e6963}\" is not acessible via a path name.

avtar Error <7553>: Specified source path "n\a" does not exist; ignored

avtar Error <8012>: Error in path list: All paths are invalid..  Correct path list before retrying.

avtar Error <8939>: Errors occurred preparing for backup (exitcode=536870924).   No backup will be created.

avtar Info <6149>: Error summary: 3 errors: 8012, 8939, 7553

avtar Info <6645>: Not sending wrapup anywhere.

avtar Info <5314>: Command failed (3 errors, exit code 10012: error in source or target list)

Can anyone please suggest me what may be the issue and which path needs to be changed?