error with m.get("role") when the message is a json #460

raw = req.get("messages", [])
if isinstance(raw, str):
    try:
        raw = json.loads(raw)      # client double-encoded messages as a JSON string
    except ValueError:
        raw = []
if not isinstance(raw, list):
    raw = []                       # dict / number / None -> nothing to iterate
for m in raw:

# for m in req.get("messages", []):
    role = m.get("role")
    if role == "developer":
        role = "system"
    out = {"role": role, "content": _parts_of(m.get("content")) if role in ("user", "tool", "assistant") else _text_of(m.get("content"))}
    if m.get("reasoning_content"):
        out["reasoning_content"] = m["reasoning_content"]
    if m.get("tool_calls"):
        calls = []
        for c in m["tool_calls"]:
            if not isinstance(c, dict):
                continue
            fn = c.get("function", c)
            args = fn.get("arguments")
            if isinstance(args, str):               # the template requires a mapping, not a JSON string
                args = json.loads(args) if args.strip() else {}
            calls.append({"function": {"name": fn.get("name"), "arguments": args or {}}})
        out["tool_calls"] = calls
    messages.append(out)
tools = [t.get("function", t) if isinstance(t, dict) and t.get("type") == "function" else t
         for t in req.get("tools") or []] or None
kwargs = {}
# OpenAI Chat Completions: "reasoning_effort"; Responses style: "reasoning": {"effort": ...}
reasoning = req.get("reasoning") if isinstance(req.get("reasoning"), dict) else {}
kwargs.update(effort_kwargs(req.get("reasoning_effort") or reasoning.get("effort")))
# the vLLM / llama.cpp convention: {"chat_template_kwargs": {"enable_thinking": false, "reasoning_effort": "low"}}
for k, v in (req.get("chat_template_kwargs") or {}).items():
    if k == "enable_thinking" and not v:
        kwargs = {"enable_thinking": False}
    elif k == "reasoning_effort" and "enable_thinking" not in kwargs:
        kwargs.update(effort_kwargs(v))
return _late_system_to_user(messages), tools, kwargs