Running Error about RFD3's Symmetry examples #132
Description
Dear developers,
When running RFD3's official examples: symmetry: designs with motifs, e.g. unsym_C3_6t8h, the following error is raised:
/opt/venv/lib/python3.12/site-packages/rfd3/inference/symmetry/atom_array.py
│ :61 in chain_id_to_index
│ 58 │ │ index: zero-based index
│ 59 │ """
│ 60 │ if not chain_id or not all(c in _CHAIN_ALPHABET for c in chain_id)
│ ❱ 61 │ │ raise ValueError(f"Invalid chain ID: {chain_id}")
│ 62 │
│ 63 │ # Offset for all shorter chain IDs (26 + 26^2 + ... + 26^(len-1))
│ 64 │ offset = sum(26**k for k in range(1, len(chain_id)))
│
│ locals
│ │ chain_id = 'a' │
──────────────────
ValueError: Invalid chain ID: a
Moreover, other symmetry: Unconditional multimer design works fine.