bytedance/deer-flow · error · ValueError

OpenViking default_peer_id must not start with the reserved

Error message

OpenViking default_peer_id must not start with the reserved prefix {GENERATED_PEER_PREFIX!r}

What it means

Error "OpenViking default_peer_id must not start with the reserved prefix {GENERATED_PEER_PREFIX!r}" thrown in bytedance/deer-flow.

Source

Thrown at backend/packages/harness/deerflow/agents/memory/backends/openviking/config.py:123

        if unknown:
            raise ValueError("Unknown OpenViking backend_config fields: " + ", ".join(unknown))
        result._validate()
        return result

    def _validate(self) -> None:
        parsed = urlparse(self.base_url)
        if parsed.scheme not in {"http", "https"} or not parsed.netloc:
            raise ValueError("OpenViking base_url must be an absolute http(s) URL")
        if parsed.scheme == "http" and not self.allow_insecure_http and parsed.hostname not in {"127.0.0.1", "localhost", "openviking"}:
            raise ValueError("OpenViking plain HTTP is allowed only for localhost/openviking; set allow_insecure_http=true only for a trusted internal network")
        if not self.owner_user_id:
            raise ValueError("OpenViking owner_user_id must not be empty")
        if not self.api_key:
            raise ValueError(f"OpenViking USER API key is missing; set {self.api_key_env}")
        if not is_safe_peer_id(self.default_peer_id):
            raise ValueError("OpenViking default_peer_id must start with a lowercase letter or digit and contain at most 64 lowercase letters, digits, '_' or '-'")
        if self.default_peer_id.startswith(GENERATED_PEER_PREFIX):
            raise ValueError(f"OpenViking default_peer_id must not start with the reserved prefix {GENERATED_PEER_PREFIX!r}")
        if not isfinite(self.timeout_seconds) or self.timeout_seconds <= 0:
            raise ValueError("OpenViking timeout_seconds must be a finite value > 0")
        if not 1 <= self.search_top_k <= 100:
            raise ValueError("OpenViking retrieval.top_k must be between 1 and 100")
        if self.score_threshold is not None and (not isfinite(self.score_threshold) or not 0 <= self.score_threshold <= 1):
            raise ValueError("OpenViking retrieval.score_threshold must be a finite value between 0 and 1")
        if not 256 <= self.max_injection_chars <= 100_000:
            raise ValueError("OpenViking retrieval.max_injection_chars must be between 256 and 100000")
        if self.content_mode not in {"auto", "abstract", "overview", "read"}:
            raise ValueError("OpenViking retrieval.content_mode must be auto, abstract, overview, or read")
        if not self.injection_query:
            raise ValueError("OpenViking retrieval.injection_query must not be empty")
        if self.startup_policy not in {"fail_fast", "warn"}:
            raise ValueError("OpenViking startup_policy must be 'fail_fast' or 'warn'")
        if self.read_failure_policy not in {"fail_open", "raise"}:
            raise ValueError("OpenViking failure_policy.read must be 'fail_open' or 'raise'")
        if self.write_failure_policy not in {"log_and_drop", "raise"}:
            raise ValueError("OpenViking failure_policy.write must be 'log_and_drop' or 'raise'")

View on GitHub (pinned to 1dd6ba1acb)

Solutions

1. Pick a default_peer_id that does not start with the reserved generated prefix.
2. Omit default_peer_id to use the generated form.

When it happens

Trigger: Thrown at backend/packages/harness/deerflow/agents/memory/backends/openviking/config.py:123 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of bytedance/deer-flow@1dd6ba1acb (2026-08-14). Data as JSON: /api/errors/58a2cf62ea5fe9c7. Report an issue: GitHub.