Invoked as: ./s3cmd sync --follow-symlinks --files-from=- -c /**** --list-allow-unordered --dry-run /**** s3://****
Problem: <class 'TypeError: string indices must be integers
S3cmd:   2.3.0-dev
python:   3.8.10 (default, Jun 22 2022, 20:18:18)
[GCC 9.4.0]
environment LANG=C

Traceback (most recent call last):
  File "./s3cmd", line 3461, in <module>
    rc = main()
  File "./s3cmd", line 3358, in main
    rc = cmd_func(args)
  File "./s3cmd", line 2149, in cmd_sync
    return cmd_sync_local2remote(args)
  File "./s3cmd", line 2116, in cmd_sync_local2remote
    ret = _single_process(args[:-1])
  File "./s3cmd", line 1863, in _single_process
    return _child(destination_base, source_args)
  File "./s3cmd", line 2012, in _child
    output(u"remote copy: '%s' -> '%s'" % (relative_file['copy_src'], relative_file))
TypeError: string indices must be integers