openai/codex · error · std::io::Error

{field_label} cannot be blank

Error message

{field_label} cannot be blank

What it means

Error "{field_label} cannot be blank" thrown in openai/codex.

Source

Thrown at codex-rs/core/src/config/agent_roles.rs:339

    let path_uri = PathUri::from_abs_path(path);
    let contents = fs
        .read_file_text(&path_uri, ReadFileOptions::default(), /*sandbox*/ None)
        .await?;
    let config_base_dir = path.parent().unwrap_or_else(|| path.clone());
    parse_agent_role_file_contents(
        &contents,
        path.as_path(),
        config_base_dir.as_path(),
        role_name_hint,
    )
}

fn normalize_agent_role_description(
    field_label: &str,
    description: Option<&str>,
) -> std::io::Result<Option<String>> {
    match description.map(str::trim) {
        Some("") => Err(std::io::Error::new(
            std::io::ErrorKind::InvalidInput,
            format!("{field_label} cannot be blank"),
        )),
        Some(description) => Ok(Some(description.to_string())),
        None => Ok(None),
    }
}

fn validate_required_agent_role_description(
    role_name: &str,
    description: Option<&str>,
) -> std::io::Result<()> {
    if description.is_some() {
        Ok(())
    } else {
        Err(std::io::Error::new(
            std::io::ErrorKind::InvalidInput,
            format!("agent role `{role_name}` must define a description"),

View on GitHub (pinned to 339751715c)

Solutions

1. Provide a non-blank value for {field_label}.

When it happens

Trigger: Thrown at codex-rs/core/src/config/agent_roles.rs:339 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/ee7f9c4505184570. Report an issue: GitHub.