I received the below error executing this command:

s3cmd cp s3://bucket1/prefix* s3://bucket2/dir/


Problem: KeyErr: 'dest_name'
S3cmd:   1.0.0

Traceback (most recent call last):
  File "/usr/bin/s3cmd", line 2006, in ?
    main()
  File "/usr/bin/s3cmd", line 1950, in main
    cmd_func(args)
  File "/usr/bin/s3cmd", line 614, in cmd_cp
    subcmd_cp_mv(args, s3.object_copy, "copy", "File %(src)s copied to %(dst)s")
  File "/usr/bin/s3cmd", line 604, in subcmd_cp_mv
    dst_uri = S3Uri(item['dest_name'])
KeyError: 'dest_name'