Hmbown/CodeWhale · error · std::io::Error

No session found with prefix: {prefix}

Error message

No session found with prefix: {prefix}

What it means

load_session_by_prefix() enumerated all saved sessions and none had an id starting with the given prefix. The error reports the caller's (possibly truncated or mistyped) prefix; the requested session simply does not exist on disk.

Source

Thrown at crates/tui/src/session_manager.rs:1505

    /// This preserves the historical recovery behavior for existing callers.
    /// Embedding hosts performing ordinary runtime reads should use
    /// [`Self::load_session_snapshot`] instead.
    pub fn load_session(&self, id: &str) -> std::io::Result<SavedSession> {
        self.recover_session_for_resume(id)
            .map(|recovery| recovery.session)
    }

    /// Load a session by partial ID prefix
    pub fn load_session_by_prefix(&self, prefix: &str) -> std::io::Result<SavedSession> {
        let sessions = self.list_sessions()?;

        let matches: Vec<_> = sessions
            .into_iter()
            .filter(|s| s.id.starts_with(prefix))
            .collect();

        match matches.len() {
            0 => Err(std::io::Error::new(
                std::io::ErrorKind::NotFound,
                format!("No session found with prefix: {prefix}"),
            )),
            1 => self.load_session(&matches[0].id),
            _ => Err(std::io::Error::new(
                std::io::ErrorKind::InvalidInput,
                format!(
                    "Ambiguous prefix '{}' matches {} sessions",
                    prefix,
                    matches.len()
                ),
            )),
        }
    }

    /// List all saved sessions, sorted by most recently updated
    pub fn list_sessions(&self) -> std::io::Result<Vec<SessionMetadata>> {
        let mut sessions = Vec::new();

View on GitHub (pinned to 0c42157ee5)

Solutions

1. Re-run the session list command to copy the exact id
2. Lengthen or correct the prefix before retrying

When it happens

Trigger: Thrown at crates/tui/src/session_manager.rs:1505 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Hmbown/CodeWhale@0c42157ee5 (2026-08-20). Data as JSON: /api/errors/e3cc5b42e4de9bd6. Report an issue: GitHub.