zellij-org/zellij · error · anyhow::Error

active tab not found for client {:?}

Error message

active tab not found for client {:?}

What it means

Error "active tab not found for client {:?}" thrown in zellij-org/zellij.

Source

Thrown at zellij-server/src/screen.rs:4418

    }

    /// Returns a mutable reference to this [`Screen`]'s tabs.
    pub fn get_tabs_mut(&mut self) -> &mut BTreeMap<usize, Tab> {
        &mut self.tabs
    }

    pub fn get_tabs(&self) -> &BTreeMap<usize, Tab> {
        &self.tabs
    }

    /// Returns an immutable reference to this [`Screen`]'s active [`Tab`].
    pub fn get_active_tab(&self, client_id: ClientId) -> Result<&Tab> {
        match self.active_tab_ids.get(&client_id) {
            Some(tab) => self
                .tabs
                .get(tab)
                .ok_or_else(|| anyhow!("active tab {} does not exist", tab)),
            None => Err(anyhow!("active tab not found for client {:?}", client_id)),
        }
    }

    pub fn get_client_input_mode(&self, client_id: ClientId) -> Option<InputMode> {
        self.get_active_tab(client_id)
            .ok()
            .and_then(|tab| tab.get_client_input_mode(client_id))
    }

    pub fn get_first_client_id(&self) -> Option<ClientId> {
        self.active_tab_ids.keys().next().copied()
    }

    pub fn has_no_client_to_act_for(&self, client_id: ClientId) -> bool {
        self.get_active_tab(client_id).is_err() && self.get_first_client_id().is_none()
    }

    pub fn report_no_client_to_act_for(

View on GitHub (pinned to e839bfffa5)

Solutions

1. Ensure at least one tab exists before attaching or moving clients.
2. Verify the tab index/name is valid with `zellij action query-tab-names`.

When it happens

Trigger: Occurs at zellij-server/src/screen.rs:4309 when the operation fails: "active tab not found for client {:?}". Currently there is no defensive handling preventing or contextualizing this failure before it surfaces.

Common situations: Race between tab close and a client attach/move action, or a stale tab index.

AI-assisted analysis of zellij-org/zellij@e839bfffa5 (2026-08-19). Data as JSON: /api/errors/9719d2a73453dd3d. Report an issue: GitHub.