openai/codex · error · anyhow::Error

reasoning item in payload {} had non-array {key}

Error message

reasoning item in payload {} had non-array {key}

What it means

Error "reasoning item in payload {} had non-array {key}" thrown in openai/codex.

Source

Thrown at codex-rs/rollout-trace/src/reducer/conversation/normalize.rs:313

    Content,
    Summary,
}

fn append_reasoning_parts(
    item: &Value,
    key: &str,
    kind: ReasoningPartKind,
    raw_payload: &RawPayloadRef,
    parts: &mut Vec<ConversationPart>,
) -> Result<()> {
    let Some(items) = item.get(key) else {
        return Ok(());
    };
    if matches!((kind, items), (ReasoningPartKind::Content, Value::Null)) {
        return Ok(());
    }
    let Some(items) = items.as_array() else {
        bail!(
            "reasoning item in payload {} had non-array {key}",
            raw_payload.raw_payload_id
        );
    };

    for content_item in items {
        let Some(item_type) = content_item.get("type").and_then(Value::as_str) else {
            bail!(
                "reasoning item in payload {} had {key} entry without string type",
                raw_payload.raw_payload_id
            );
        };
        let expected_type = match kind {
            ReasoningPartKind::Content => {
                if !matches!(item_type, "reasoning_text" | "text") {
                    bail!(
                        "reasoning item in payload {} had unsupported content type {item_type}",
                        raw_payload.raw_payload_id

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/rollout-trace/src/reducer/conversation/normalize.rs:313 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/32bc57334e3dc348. Report an issue: GitHub.