HKUDS/DeepTutor · error · ValueError

Knowledge base name is too long; maximum length is {_MAX_KB_

Error message

Knowledge base name is too long; maximum length is {_MAX_KB_NAME_LENGTH}

What it means

Error "Knowledge base name is too long; maximum length is {_MAX_KB_NAME_LENGTH}" thrown in HKUDS/DeepTutor.

Source

Thrown at deeptutor/knowledge/naming.py:26

_CONTROL_CHARS = re.compile(r"[\x00-\x1f\x7f]")
_FORBIDDEN_CHARS = set('<>:"/\\|?*#%')
_MAX_KB_NAME_LENGTH = 120


def validate_knowledge_base_name(name: str) -> str:
    """Validate and normalize a user-facing knowledge-base name.

    Names may contain Unicode letters, spaces, dots, hyphens, underscores, and
    common punctuation, but must not contain filesystem or URL-reserved
    separators that would break KB directories or API route paths.
    """
    normalized = unicodedata.normalize("NFC", str(name or "")).strip()
    if not normalized:
        raise ValueError("Knowledge base name is required")
    if normalized in {".", ".."}:
        raise ValueError("Knowledge base name cannot be '.' or '..'")
    if len(normalized) > _MAX_KB_NAME_LENGTH:
        raise ValueError(
            f"Knowledge base name is too long; maximum length is {_MAX_KB_NAME_LENGTH}"
        )
    if _CONTROL_CHARS.search(normalized):
        raise ValueError("Knowledge base name cannot contain control characters")

    forbidden = sorted(ch for ch in _FORBIDDEN_CHARS if ch in normalized)
    if forbidden:
        joined = " ".join(forbidden)
        raise ValueError(
            "Knowledge base name contains reserved characters: "
            f"{joined}. Avoid path or URL separators such as /, \\, ?, #, and %."
        )

    return normalized

View on GitHub (pinned to 3e82f13042)

When it happens

Trigger: Thrown at deeptutor/knowledge/naming.py:26 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of HKUDS/DeepTutor@3e82f13042 (2026-08-27). Data as JSON: /api/errors/c1395aedeacf3107. Report an issue: GitHub.