{"record":{"id":"9719d2a73453dd3d","repo":"zellij-org/zellij","slug":"active-tab-not-found-for-client","errorCode":null,"errorMessage":"active tab not found for client {:?}","messagePattern":"active tab not found for client (.+?)","errorType":"exception","errorClass":"anyhow::Error","httpStatus":null,"severity":"error","filePath":"zellij-server/src/screen.rs","lineNumber":4418,"sourceCode":"    }\n\n    /// Returns a mutable reference to this [`Screen`]'s tabs.\n    pub fn get_tabs_mut(&mut self) -> &mut BTreeMap<usize, Tab> {\n        &mut self.tabs\n    }\n\n    pub fn get_tabs(&self) -> &BTreeMap<usize, Tab> {\n        &self.tabs\n    }\n\n    /// Returns an immutable reference to this [`Screen`]'s active [`Tab`].\n    pub fn get_active_tab(&self, client_id: ClientId) -> Result<&Tab> {\n        match self.active_tab_ids.get(&client_id) {\n            Some(tab) => self\n                .tabs\n                .get(tab)\n                .ok_or_else(|| anyhow!(\"active tab {} does not exist\", tab)),\n            None => Err(anyhow!(\"active tab not found for client {:?}\", client_id)),\n        }\n    }\n\n    pub fn get_client_input_mode(&self, client_id: ClientId) -> Option<InputMode> {\n        self.get_active_tab(client_id)\n            .ok()\n            .and_then(|tab| tab.get_client_input_mode(client_id))\n    }\n\n    pub fn get_first_client_id(&self) -> Option<ClientId> {\n        self.active_tab_ids.keys().next().copied()\n    }\n\n    pub fn has_no_client_to_act_for(&self, client_id: ClientId) -> bool {\n        self.get_active_tab(client_id).is_err() && self.get_first_client_id().is_none()\n    }\n\n    pub fn report_no_client_to_act_for(","sourceCodeStart":4400,"sourceCodeEnd":4436,"githubUrl":"https://github.com/zellij-org/zellij/blob/e839bfffa586992364309a685b2c71f3b23c247e/zellij-server/src/screen.rs#L4400-L4436","documentation":"Error \"active tab not found for client {:?}\" thrown in zellij-org/zellij.","triggerScenarios":"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.","commonSituations":"Race between tab close and a client attach/move action, or a stale tab index.","solutions":["Ensure at least one tab exists before attaching or moving clients.","Verify the tab index/name is valid with `zellij action query-tab-names`."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"e839bfffa586992364309a685b2c71f3b23c247e","analyzedAt":"2026-08-19T07:42:58.758Z","contentChangedAt":"2026-08-19T07:42:58.758Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}