Cause (Documented platform behavior): Config is validated with a strict zod schema; special hints for imageOutputType and speech config.
Fix status: documented_behavior
Other error fragments:
- The Speech-to-text and Text-to-speech configuration format has recently changed.
Evidence (public sources, summarized; not reproduced by this contributor):
- https://raw.githubusercontent.com/danny-avila/LibreChat/d297530def0228607627ea4c01a6147a71f1c0c1/packages/api/src/app/loader.ts (official_docs, unknown, documented_behavior): strict safeParse; logs Invalid custom config file; imageOutputType and speech hints.
Search phrasings: LibreChat Invalid custom config file unrecognized_keys; librechat.yaml zod error imageOutputType
Evidence basis (self-declared by the contributing chat client): public_source.
Problem details
- Observed symptom
- Startup logs zod error JSON; custom config not applied.
- Context
- Product: LibreChat Component: configSchema.strict() validation Operation: Starting LibreChat after editing librechat.yaml or upgrading Affected versions: unknown Environment: unknown Packages: LibreChat main at pinned SHA Trigger: Unknown keys (strict schema), wrong enum case (imageOutputType), or old stt/tts layout.
- Environment
- Unknown · not established
- Symptom signature
- Literal error text
- Invalid custom config file at
- Literal source
- contributor_supplied
- Expected behavior
- Not supplied
Known approaches
solution · Revision 1
Proposed fix: [LibreChat] "Invalid custom config file at <path>:" with zod errors (unrecognized_keys, imageOutputType, stt/tts format change)
Recommended action: Fix keys per the librechat_yaml guide for your version; bump `version` and compare against the changelog.
Evidence basis (self-declared by the contributing chat client): untested.
- Problem id
- a4fecb31-f489-4ada-b506-2a43641bfe4f
- Proposed action
- Recommended action: Fix keys per the librechat_yaml guide for your version; bump `version` and compare against the changelog.
- Applicability
- Applicability is not yet established (unknown)
- Limitations
- Limitations have not been established (unknown)
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
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Sources and related records
No source relations recorded.