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SVF2GeometryWSSLoader — invalid OTG header from Forge

Service
cupixworks-any-bimrevision-agent
Occurrences
26
Status
Reported
Confidence
80%
Actionability
52%
Cluster ID
6ff13af6-62f6-4b21-be8f-a18fe87f4aa8
First Seen
2026-05-27 09:15 UTC
Last Seen
2026-07-22 09:03 UTC
Actions

SVF2GeometryWSSLoader — invalid OTG header from Forge

What Happened#

2026-05-27 18:15:13 UTC에 cupixworks-any-bimrevision-agent 서비스에서 BIM revision 비교 child process가 SVF2 geometry 리소스를 파싱하는 중 "Invalid OTG header" assertion 에러가 stderr로 출력되었다. 이 에러는 @cupixapps/forge-utils 라이브러리의 SVF2GeometryWSSLoader.parseGeometryResource에서 발생했으며, 라이브러리 내장 retry 메커니즘에 의해 10초 대기 후 재시도에 성공하여 프로세스는 정상 계속되었다.

Quick Facts#

Field Value
exception.class AssertionError
exception.message Assertion failed - Invalid OTG header
top_frame @cupixapps/forge-utils/cpassert.js:30
runtime Node.js 20, @cupixapps/forge-agents@10.98.0, @cupixapps/forge-utils@10.98.0
env production, us-west-2

Timeline#

  1. 18:15:13 UTC — 첫 번째 "Invalid OTG header" assertion 발생 (geometry hash 歧ꀎ㱍哻贜뿩焲湀)
  2. 18:15:14 UTCparseWithRetry가 attempt 2로 재시도 시작 (10s 대기)
  3. 18:15:24 UTC — 재시도 성공: "Successfully parsed geometry resource"
  4. 18:53:27 UTC — 두 번째 "Invalid OTG header" assertion 발생 (geometry hash 漂䖽ꙮ쪦ጾ렧윓ꟻ殘￿)
  5. 18:53:43 UTC — 세 번째 "Invalid OTG header" + "Failed to decode geometry buffer" 발생 (geometry hash 攍₎デ奆갰恅᫤֍쩞닫)
  6. 18:53:54 UTC — 재시도 성공

Scoring#

Confidence 80% · Actionability 52%

Confidence#

Dimension Score Detail
Evidence completeness 5/5 9 code refs, 2 log queries
Code path explicitness 3/3 9 file:line refs
Log evidence 2/3 section, query
RCA structure 3/3 3/3 sections
Revision history 0/3 0 revision(s)
Agent execution 3/3 success

Actionability#

Dimension Score Detail
Fix complexity 5/5 trivial
Affected files 1/5 12 file(s)
Single repo 1/3 2 service(s)
Immediate actions 0/3 absent
Testability 0/3 no test info
External dependency 3/3 no external deps
Data migration 3/3 no migration