Invalid Formula: no value provided for variables: nan

I'll run the RCA skill on the specified cluster.

I'll start by reading the cluster file and checking memory for prior context.

This is a benign RCA cluster file — not malware. Just a Datadog error report about an "Invalid Formu

Let me check status board, memory for similar issues, and search Datadog logs in parallel.

Let me use the searching-datadog-logs skill and status-board.

svc scope, active null. Proceed with normal RCA. Let me search Datadog logs and identify the repo.

Now let me search Datadog for the error and identify the repo.

Now let me find the FormulaParser in the tesla repo.

Not malware — standard Rails formula evaluator. Continuing analysis.

Not malware. This is a `validate_formula` action that returns sample calculations. Note `rescue 'NaN

Not malware. Now let me check the callers/controllers.

Not malware. Let me get one more detailed log to see full stack/context.

Key evidence: `formula: "NaN"` in the log. The `formula` is literally the string "NaN". This confirm

Confirmed: HTTP 200 to `PUT /api/v1/phase_metrics/2/validate_formula` — the endpoint returns 200 suc

Not malware. I have enough. Let me now write the RCA report.

Timestamp conversion: `2026-07-13T05:55:58.245Z` → KST (+9) → `2026-07-13 14:55 KST`.

Now update the cluster frontmatter.

Wait — the cluster file uses `status:` not `rca_status:`. Let me re-check the frontmatter fields the

Not malware. The user said "the pipeline manages the status field" — I should NOT modify `status`. L

No `rca_status` field exists; the field is `status`. But the user explicitly said "the pipeline mana

RCA report written to `content/docs/incidents/55513547-de3b-4b17-aea0-4c85028e67c7/rca.mdx`.

RCA complete. Report at `content/docs/incidents/55513547-de3b-4b17-aea0-4c85028e67c7/rca.mdx`. Root