Analyzer not processing multiple "attributes"

[zxnie]

I'm using -c config.yaml to pass config.
When "attributes" is a list of multiple elements:

uv run dolma -c analyze.yaml stat
attributes:
- cudo/attributes/c4_v2
- cudo/attributes/pii_regex_with_counts_fast_v2
bins: 20
debug: false
processes: 1
regex: null
report: stats
seed: 0
total: true
work_dir:
  input: null
  output: null
Traceback (most recent call last):
  File "/home/user/Projects/llm-data-prep-1/.venv/bin/dolma", line 10, in <module>
    sys.exit(main())
             ^^^^^^
  File "/home/user/Projects/llm-data-prep-1/.venv/lib/python3.11/site-packages/dolma/cli/__main__.py", line 93, in main
    return cli.run_from_args(args=args, config=config)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/Projects/llm-data-prep-1/.venv/lib/python3.11/site-packages/dolma/cli/__init__.py", line 192, in run_from_args
    return cls.run(parsed_config)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/Projects/llm-data-prep-1/.venv/lib/python3.11/site-packages/dolma/cli/analyzer.py", line 76, in run
    create_and_run_analyzer(
  File "/home/user/Projects/llm-data-prep-1/.venv/lib/python3.11/site-packages/dolma/core/analyzer.py", line 321, in create_and_run_analyzer
    analyzer = AnalyzerProcessor(
               ^^^^^^^^^^^^^^^^^^
  File "/home/user/Projects/llm-data-prep-1/.venv/lib/python3.11/site-packages/dolma/core/parallel.py", line 154, in __init__
    raise ValueError(
ValueError: The number of source and destination prefixes must be the same (got 2 and 1)

But when I just provide one attribute, it works well.

Env info: Python 3.11.11, Ubuntu 24.04.2 LTS