Lotusnotes backup failed

Lotus notes backup failed with below error.

2017-07-13 21:43:11 avlotus Info <5008>: Logging to C:\Program Files\avs\var\clientlogs\xxxxx-lotus.log

2017-07-13 21:43:11 avlotus Info <6673>: CTL listening on port 6951

2017-07-13 21:43:11 avlotus Info <10684>: Setting ctl message version to 3 (from 1)

2017-07-13 21:43:11 avlotus Info <16136>: Setting ctl max message size to 268435456

2017-07-13 21:43:11 avlotus Info <9259>: Exclude list file is

2017-07-13 21:43:11 avlotus Info <9261>: Include list file is

2017-07-13 21:43:11 avlotus Info <8097>: Notes.ini Path = d:\notes\notes.ini

2017-07-13 21:43:11 avlotus Info <9280>: Lotus Domino executable directory full path = d:\notes\

2017-07-13 21:43:11 avlotus Info <8087>: Avlotus Full Backup request

2017-07-13 21:43:11 avlotus Info <11605>: Added D:\Notes\notes.ini to backup list

2017-07-13 21:43:11 avlotus Info <8225>: Loading the Notes/Domino library d:\notes\nnotes.dll

2017-07-13 21:43:11 avlotus Warning <9310>: Unable to load d:\notes\nnotes.dll: 193.

2017-07-13 21:43:11 avlotus Error <19226>: Avlotus error creating LotusAPI_Impl
2017-07-13 21:43:11 avlotus Info <8045>: Avlotus Backup Failed
2017-07-13 21:43:11 avlotus Info <12904>: Final summary generated subwork 0, cancelled/aborted 1, exitcode 1

Regards,

DIleep M