{"record":{"id":"a46e4756e2dfdff5","repo":"zellij-org/zellij","slug":"failed-to-find-pane-with-id-pane-id","errorCode":null,"errorMessage":"failed to find pane with id {pane_id:?}","messagePattern":"failed to find pane with id (.+?)","errorType":"exception","errorClass":"anyhow::Error","httpStatus":null,"severity":"error","filePath":"zellij-server/src/tab/mod.rs","lineNumber":4461,"sourceCode":"        key_with_modifier: &Option<KeyWithModifier>,\n        raw_input_bytes: Vec<u8>,\n        raw_input_bytes_are_kitty: bool,\n        pane_id: PaneId,\n        client_id: Option<ClientId>,\n        completion_tx: Option<NotificationEnd>,\n    ) -> Result<bool> {\n        // returns true if we need to update the UI (eg. when a command pane is closed with ctrl-c)\n        let err_context = || format!(\"failed to write to pane with id {pane_id:?}\");\n\n        let mut should_update_ui = false;\n        let is_sync_panes_active = self.is_sync_panes_active();\n\n        let active_pane = self\n            .floating_panes\n            .get_mut(&pane_id)\n            .or_else(|| self.tiled_panes.get_pane_mut(pane_id))\n            .or_else(|| self.suppressed_panes.get_mut(&pane_id).map(|p| &mut p.1))\n            .ok_or_else(|| anyhow!(format!(\"failed to find pane with id {pane_id:?}\")))\n            .with_context(err_context)?;\n\n        // We always write for non-synced terminals.\n        // However if the terminal is part of a tab-sync, we need to\n        // check if the terminal should receive input or not (depending on its\n        // 'exclude_from_sync' configuration).\n        let should_not_write_to_terminal = is_sync_panes_active && active_pane.exclude_from_sync();\n\n        if should_not_write_to_terminal {\n            return Ok(should_update_ui);\n        }\n\n        match pane_id {\n            PaneId::Terminal(active_terminal_id) => {\n                match active_pane.adjust_input_to_terminal(\n                    key_with_modifier,\n                    raw_input_bytes,\n                    raw_input_bytes_are_kitty,","sourceCodeStart":4443,"sourceCodeEnd":4479,"githubUrl":"https://github.com/zellij-org/zellij/blob/474ea0cef620c83d6ec05a7c28c7f80c4f63bbbb/zellij-server/src/tab/mod.rs#L4443-L4479","documentation":"Thrown by Tab::write_to_pane_id when the target pane_id is not found in any of the three stores it checks: floating_panes.get_mut, tiled_panes.get_pane_mut, or suppressed_panes. It means input was addressed to a pane that has already been closed, exited, or otherwise removed from all pane maps of this tab.","triggerScenarios":"Writing to a pane id that was resolved earlier but whose pane exited in between — e.g. keys held down while the pane's process exits, sync-panes broadcasting input to a set of panes where one closed, or a cached pane id (focus stored in a keybind/action) referencing a dead pane. Suppressed panes are still found via the third lookup, so the pane must be fully gone.","commonSituations":"Fast typing during command exit in a layout with command panes; sync-panes mode where panes exit at different times; automated zellij action scripts that store a pane id and use it after the pane closed.","solutions":["If it happens once while a pane is exiting, treat it as benign: the input had no destination; re-focus another pane and continue.","For automation, re-resolve the pane id right before writing (re-read active pane / search results) instead of caching it across steps.","If it repeats steadily with visible panes, note whether the pane was a command pane closed with Ctrl-c (should_update_ui path) and report the layout + sequence upstream.","Update zellij; pane lifetime handling for sync-panes and suppressed panes sees regular fixes."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"// re-resolve immediately before writing; do not cache pane ids\nlet Some(pane_id) = tab.get_active_pane_id(client_id) else {\n    return Ok(());\n};\ntab.write_to_pane_id(key, bytes, kitty, pane_id, Some(client_id), None)","typeGuard":null,"tryCatchPattern":"match tab.write_to_pane_id(key, bytes, kitty, pane_id, client_id, None) {\n    Ok(update) => update,\n    Err(e) if e.to_string().contains(\"failed to find pane with id\") => {\n        false // pane exited mid-flight; input has no destination\n    },\n    Err(e) => return Err(e),\n}","preventionTips":["In automation, resolve pane ids as late as possible and re-resolve after any close/exit step.","When using sync-panes, expect some broadcast writes to target already-exited panes and treat that path as skippable.","Avoid storing pane ids across user interactions in plugins; re-query on each use."],"tags":["zellij","rust","pane-not-found","stale-id","sync-panes"],"backgroundTag":"pane-not-found","analyzedSha":"474ea0cef620c83d6ec05a7c28c7f80c4f63bbbb","analyzedAt":"2026-08-19T07:42:58.758Z","contentChangedAt":"2026-08-19T07:42:58.758Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}