unslothai/unsloth · warning · ValueError

Path does not exist

Error message

Path does not exist

What it means

Validation error from add_scan_folder_with_status: the normalized path (after expanduser + realpath) does not exist on disk. realpath does not require existence, so this check catches typos, moved directories, and unmounted volumes before they enter the scan-folders DB.

Source

Thrown at studio/backend/hub/storage/scan_folders.py:125

    conn = get_connection()
    try:
        _ensure_schema(conn)
        rows = conn.execute(
            "SELECT id, path, created_at FROM scan_folders ORDER BY created_at"
        ).fetchall()
        return [dict(row) for row in rows]
    finally:
        conn.close()


def add_scan_folder_with_status(path: str) -> tuple[dict, bool]:
    """Add a readable scan folder and return its row plus whether it was inserted."""
    if not path or not path.strip():
        raise ValueError("Path cannot be empty")
    normalized = os.path.realpath(os.path.expanduser(normalize_path(path.strip())))

    if not os.path.exists(normalized):
        raise ValueError("Path does not exist")
    if not os.path.isdir(normalized):
        raise ValueError("Path must be a directory, not a file")
    if not os.access(normalized, os.R_OK | os.X_OK):
        raise ValueError("Path is not readable")
    if is_local_filesystem_root(normalized):
        # A local fs root ("/", "C:\\") would expose denied system dirs via browse;
        # a UNC share root (\\server\share) has none under it and stays registerable.
        raise ValueError("The filesystem root cannot be registered")
    if _contains_sensitive_path_component(normalized):
        raise ValueError("Credential or configuration directories are not allowed")

    is_win = platform.system() == "Windows"
    check = os.path.normcase(normalized) if is_win else normalized
    for prefix in _denied_path_prefixes():
        if check == prefix or check.startswith(prefix + os.sep):
            if prefix == "/run" and is_linux_run_media_path(check):
                continue
            raise ValueError(f"Path under {prefix} is not allowed")

View on GitHub (pinned to 203007d190)

Solutions

1. Verify the path exists as the same user the backend runs as: `sudo -u <backend-user> ls <path>`.
2. Fix typos in the submitted path.
3. Mount the volume first, then register the folder.

import os

def folder_exists(path: str) -> bool:
    return os.path.isdir(os.path.realpath(os.path.expanduser(path.strip())))

When it happens

Trigger: Registering a folder that was deleted/renamed; a typo like /dat/models instead of /data/models; a mount point whose volume is not mounted; using ~user for a user that does not exist.

Common situations: External drive unplugged; NAS share not mounted at boot before studio starts; paths copy-pasted from another machine.

Related errors

• Execution artifact path is not a dataset folder.
• Local base_repo is not a diffusers pipeline directory (no {i
• Path does not exist
• Path must be a directory, not a file
• Path is not readable

AI-assisted analysis of unslothai/unsloth@203007d190 (2026-08-15). Data as JSON: /api/errors/c4880e9bc8d914c3. Report an issue: GitHub.