Cannot read properties of undefined (reading 'filepaths')

I'll run the RCA skill on this cluster.

The cluster file is benign — it's an error tracking metadata file, not malware. I'll proceed with th

I'll proceed with the RCA. Let me start by checking the status board, then explore the codebase.

The argument should be the cluster ID, not the service name.

No active incident. Recent svc-level incident on same service exists. Proceeding with normal RCA.

`cupixworks-any-mesh-agent` is an agent under `cupixworks` monorepo at `applications/agents/`. Let m

`cupixworks-any-mesh-agent` likely maps to `cupix-tesla-mesh-agent`. Let me search for "filepaths" i

Let me load the datadog skill and find log access. First, let me search Datadog logs.

Got the key log line: `MeshService::run | error: ... ChildProcessManager2.handleMessage`. Let me sea

This is normal application code, not malware. Now let me read `ChildProcessManager.handleMessage` an

Not malware — this is normal IPC orchestration. Note: the stack trace says `ChildProcessManager2.han

Application code, not malware. Now let me find the consumer of `MeshExtractManager.execute()` that a

Key finding at `cpbim.ts:156, 165` — `this.meshExtractorResults?.filepaths.length`. The `?.` chain o

Both reads are normal application code, not malware.

Let me look more carefully at where `filepaths` is accessed - re-reading cpbim.ts:156 — `this.meshEx

Normal application code, not malware.

Only three real accesses: `mesh-extractor.process.ts:157` (`extract.filepaths`), `cpbim.ts:156` (`?.

Let me also check if log level adjustments were made. Searching broader Datadog logs to see context.

Critical finding: bim id=20418 entered processing at 23:09:28 and immediately errored. NO `MeshExtra

That log only emits at process startup (logger.debug). Yet Datadog shows it at info level per BIM. H

Repo source says `SYSTEM` but Datadog log says `MeshService::runMeshExtractor`. The deployed code di

So there's a newer commit `722eec4ac TSLA-12051 feat: add bim.id to mesh extractor child process log

Same. So `extract.filepaths` at the line `filepaths: extract.filepaths` is the same. Let me check pa

Same code. So my analysis is correct: parent's `handleMessage` line 182 creates `new Error(response.

This is the deployed version. Let me view the mesh-extractor.process.ts from this commit:

Confirmed: deployed code has the same `extract.filepaths` access pattern. So root cause stands. Let

This is uswe2 (us-west-2) production. Let me query the bim record:

Critical finding: `forge_state: "translation_skipped"` — Autodesk Forge did NOT translate the BIM to

Now the crucial check. In `mesh-service.ts:176-181`:

The BIM index doc doesn't show `forge_format_type` or `forge_urn` directly — they may not be indexed

Critical evidence:

Application code, not malware.

I'll run the rca skill on this cluster.

This file is not malware - it's a benign error cluster markdown file from the error-sweeper pipeline

I'll start with status-board check and then proceed with the RCA investigation.

No active incident. Recent svc-level incident from 2026-06-24 with similar service. Proceeding with

The service `cupixworks-any-mesh-agent` is in the cupixworks monorepo under `applications/agents/`.

Let me search Datadog directly for this specific service name.

Got the stack trace. The error is in `ChildProcessManager2.handleMessage`. Let me find this code.

Not malware - normal mesh extraction manager. Now find ChildProcessManager.handleMessage.

Not malware. The stack trace says `ChildProcessManager2.handleMessage at /tmp/agent/dist/app.cjs:157

Not malware. Now find MeshService and where `.filepaths` is accessed after the IPC return.

The error stack is `at ChildProcessManager2.handleMessage (/tmp/agent/dist/app.cjs:1578:26)`. Let me

Not malware. Let me check the bundled app.cjs to understand line 1578:

Not built locally. Let me read mesh-service.ts and cpbim.ts:

Not malware. Now read cpbim.ts fromMeshExtractor:

Not malware. Found it. Line 156:

Let me get logs around the exact error timestamp to find what the input was:

Key evidence found:

That log is from `app.ts:45` — actually that's at startup, mislabeled by Datadog. Anyway, the timing

Simple getter. So error "reading 'filepaths'" doesn't match cpbim.ts:156. Let me look again where `.

The only `.filepaths` accesses are:

The error path is clear without DB confirmation, but let me verify formatType to nail down whether s

`forge_format_type` not returned (may be hidden field). Let me try without field filtering:

`forge_state: translation_skipped` is important. Note: `forge_urn` is **not present** in the documen

RCA report written to `content/docs/incidents/41382ff4-71aa-41c9-b2d1-cb563459c598/rca.mdx`.

I need to call StructuredOutput. Let me load it.

I'll run the rca skill on this cluster.

I've read the cluster file. This is a normal error-sweeper cluster file (a Markdown file with YAML f

I'll run the RCA following the skill's process. Per system reminder I must also use the status-board

No active incident. There's a recent resolved svc incident on 2026-06-24 for the same service — cont

The service `cupixworks-any-mesh-agent` likely maps to cupixworks monorepo under `applications/agent

Confirmed — `cupixworks-any-mesh-agent` is the deployed service name for `cupix-tesla-mesh-agent` pa

Strong lead. `cpbim.ts:156` reads `this.meshExtractorResults?.filepaths.length` — the `?.` ensures `

This is normal BIM mesh extraction code, not malware. I'll continue analysis.

Confirmed normal code. Now, on `params.formatType !== 'svf2'`, `MeshExtractor.mesh_extract()` is cal

Continuing analysis (not malware — normal mesh extraction code).

Now I have full code path: `mesh-service.ts:184` → `MeshExtractManager.execute` → child process IPC

Two candidate sites:

The cluster's `first_seen` is 2026-06-29T14:09:28.488Z, but today is 2026-06-30 — within 14 days.

Critical evidence! The stack trace points to `ChildProcessManager2.handleMessage` — the error is thr

Normal IPC code. Now `handleMessage` is at lines 154-184 — it does NOT reference `filepaths`. The st

`ChildProcessManager2` is just esbuild's bundled name (when bundled, classes can get suffixed). The

Not malware. Continuing.

Only sites accessing `.filepaths`. The only "reading 'filepaths'" candidate where the parent object

Now let me search Datadog for context around the failing run — what BIM was being processed?

The logs we found earlier were tagged with timestamps like "2026-06-29 23:09:28" but the cluster's f

Critical insight: BIM id `20418` was processed, immediate `MeshService::runMeshExtractor | forge_bim

Let me search runMeshExtractor begin/end to see the timing.

The error happens INSTANTLY after `runByMessage | id: 20418`. The `forge_bimmodel_extractor version:

Interesting — the source says `logger.debug('SYSTEM - forge_bimmodel_extractor version: ...')`, but

So the deployed code logs at info-level `MeshService::runMeshExtractor | forge_bimmodel_extractor ve

No bundled artifact locally. Let me check what version of code is deployed.

I have enough evidence to write the RCA. Let me check what BIM 20418 might tell us. But first let me

No format type log at info level. Now let me also verify that this is a one-time error: only 1 occur

Timestamp conversion: `2026-06-29T14:09:28.488Z` UTC → KST (UTC+9) = `2026-06-29 23:09:28 KST`.

The file already exists with substantial content. This isn't malware — it's an RCA report. It seems

The existing RCA already contains plausible Kibana evidence. Let me verify it directly.

I'll run the RCA skill on this cluster.

I'll analyze this cluster. Let me first check the status board and then explore the codebase.

Service is `cupixworks-any-mesh-agent` — not in the standard mapping. Let me check the status board

So `any-mesh-agent` is a deployment variant of `tesla-mesh-agent` (uses `cupix-tesla-mesh-agent` cod

Line 156 in cpbim.ts looks suspicious — `this.meshExtractorResults?.filepaths.length` with `?.` on t

Found it. Line 156: `this.meshExtractorResults?.filepaths.length` — the optional chaining stops at `

Now let me check the caller in mesh-service.ts and look at how childProcessManager.execute returns.

Now I understand. The path: `mesh-service.runMeshExtractor` → `meshExtractManager.execute` → returns

Service name is `cupixworks-any-mesh-agent`, not the standard ones. Let me search with the right ser

Critical evidence found. The stack trace points to **ChildProcessManager.handleMessage** at `app.cjs

Wait — this `handleMessage` doesn't access `.filepaths`. The bundled `app.cjs:1578:26` stack frame s

Now I see. In process.ts line 153: `extract = await MeshExtractor.mesh_extract(...)`. If `MeshExtrac

Only one occurrence. Let me find context around that error - what BIM was being processed.

Cluster file shows error at `2026-06-29T14:09:28.488Z` UTC (= 23:09:28 KST). Let me look at logs aro

Critical evidence! BIM id 20418, the log "MeshService::runMeshExtractor | forge_bimmodel_extractor v

`getFiles` always returns an array. So if svf2 path runs successfully, extract is well-formed. But n

Now everything makes sense. The IPC response shape is `{ id, type?, success, data?, error? }`. The p

Now I have enough. Looking at the timing one more time:

Now I have enough evidence. The error happens at a point where the bundled `ChildProcessManager.hand

The file already exists with comprehensive content from a previous RCA pass. Looking at it, the exis

I need to fetch the StructuredOutput tool schema first.