Failed: mongorestore target 'dump' invalid

The following error appears when I try to use mongorestore command as mentioned in the Readme

2019-03-14T12:58:04.287+0530 WARNING: ignoring unsupported URI parameter ‘retrywrites’
2019-03-14T12:58:09.205+0530 using default ‘dump’ directory
2019-03-14T12:58:09.206+0530 see mongorestore --help for usage information
2019-03-14T12:58:09.207+0530 Failed: mongorestore target ‘dump’ invalid: CreateFile dump: The system cannot find the file specified.

Sorry. I missed the “data” option at the end of command.