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Root Cause: Console Reconnecting Loop Bug

Analysis of why konui/konsole needed restart after telemetry kontask

✓ Completed
on 3 Jan 2026, 6:35 pm

Output

Root Cause Analysis: Console Stuck in RECONNECTING

Two JavaScript bugs caused the console to get stuck in a polling/reconnecting loop

Bug #1: Undefined todos in state machine

// console-sm-transitions.ts:94-95
case "todo_update": {
  const todos = event.todos;  // ← Could be undefined!
  const completed = todos.filter(...)  // ← CRASH
}

Error: TypeError: can't access property "filter", todos is undefined

Bug #2: Undefined string in history logging

// console-history.ts:190
log('debug', 'history', 'Kontask output', { 
  startsWithHtml: (outputHtml && outputHtml.trim()).startsWith('<')
  //               ↑ Returns undefined if falsy, then .startsWith() crashes
});

Error: TypeError: can't access property "startsWith" of undefined

Fixes Applied

FileFix
console-sm-transitions.tsAdded null guard before filtering todos
console-recovery.tsFixed dispatch format to match handler
console-history.tsFixed logging to handle undefined outputHtml

What Triggered It

The telemetry-dashboard script sent multiple prompts through konui. When the console tried to poll for progress on kontasks that had no todos array in their context, the JavaScript crashed. This prevented proper state transitions, leaving the console stuck in "RECONNECTING..." mode.

✓ konui has been restarted with the fixes

What's Next?

Choose an action:

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Original Request

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Details

Type General
Status Completed
Scope vibetools
Tags consolebug-fixstability
Created 3 Jan 2026, 6:35 pm
Updated 3 Jan 2026, 6:35 pm
Created By claude

Raw Data

{
  "id": "72ff9139-15cc-4d4f-be1a-df73bc3d7b8d",
  "type": "general",
  "status": "completed",
  "title": "Root Cause: Console Reconnecting Loop Bug",
  "description": "Analysis of why konui/konsole needed restart after telemetry kontask",
  "context": {
    "output": "<div style=\"background:#1e1e1e;color:#e0e0e0;padding:20px;border-radius:8px;font-family:'Consolas','Monaco',monospace;\"><h2 style=\"font-family:sans-serif;color:#fff;margin:0 0 16px 0;\">Root Cause Analysis: Console Stuck in RECONNECTING</h2><p style=\"color:#9ca3af;margin:0 0 16px 0;\">Two JavaScript bugs caused the console to get stuck in a polling/reconnecting loop</p><h3 style=\"color:#e06c75;margin:16px 0 8px 0;\">Bug #1: Undefined todos in state machine</h3><div style=\"background:#2d2d2d;padding:16px;border-radius:6px;margin-bottom:16px;\"><pre style=\"margin:0;font-size:0.85rem;color:#e0e0e0;\">// console-sm-transitions.ts:94-95\ncase \"todo_update\": {\n  const todos = event.todos;  // ← Could be undefined!\n  const completed = todos.filter(...)  // ← CRASH\n}</pre><p style=\"color:#9ca3af;margin:12px 0 0 0;\"><strong>Error:</strong> <code style=\"color:#e06c75;\">TypeError: can't access property \"filter\", todos is undefined</code></p></div><h3 style=\"color:#e06c75;margin:16px 0 8px 0;\">Bug #2: Undefined string in history logging</h3><div style=\"background:#2d2d2d;padding:16px;border-radius:6px;margin-bottom:16px;\"><pre style=\"margin:0;font-size:0.85rem;color:#e0e0e0;\">// console-history.ts:190\nlog('debug', 'history', 'Kontask output', { \n  startsWithHtml: (outputHtml && outputHtml.trim()).startsWith('<')\n  //               ↑ Returns undefined if falsy, then .startsWith() crashes\n});</pre><p style=\"color:#9ca3af;margin:12px 0 0 0;\"><strong>Error:</strong> <code style=\"color:#e06c75;\">TypeError: can't access property \"startsWith\" of undefined</code></p></div><h3 style=\"color:#98c379;margin:16px 0 8px 0;\">Fixes Applied</h3><div style=\"background:#2d2d2d;padding:16px;border-radius:6px;margin-bottom:16px;\"><table style=\"width:100%;border-collapse:collapse;\"><tr style=\"border-bottom:1px solid #444;\"><th style=\"text-align:left;padding:8px;color:#98c379;\">File</th><th style=\"text-align:left;padding:8px;color:#98c379;\">Fix</th></tr><tr><td style=\"padding:8px;color:#61afef;\">console-sm-transitions.ts</td><td style=\"padding:8px;\">Added null guard before filtering todos</td></tr><tr><td style=\"padding:8px;color:#61afef;\">console-recovery.ts</td><td style=\"padding:8px;\">Fixed dispatch format to match handler</td></tr><tr><td style=\"padding:8px;color:#61afef;\">console-history.ts</td><td style=\"padding:8px;\">Fixed logging to handle undefined outputHtml</td></tr></table></div><h3 style=\"color:#61afef;margin:16px 0 8px 0;\">What Triggered It</h3><div style=\"background:#2d2d2d;padding:16px;border-radius:6px;\"><p style=\"margin:0;line-height:1.6;\">The telemetry-dashboard script sent multiple prompts through konui. When the console tried to poll for progress on kontasks that had no todos array in their context, the JavaScript crashed. This prevented proper state transitions, leaving the console stuck in \"RECONNECTING...\" mode.</p><p style=\"margin:12px 0 0 0;color:#98c379;\">✓ konui has been restarted with the fixes</p></div><div style=\"background:#2d2d2d;padding:16px;border-radius:6px;margin-top:16px;\"><h4 style=\"margin:0 0 8px 0;color:#fff;\">What's Next?</h4><p style=\"color:#9ca3af;margin:0;\">Choose an action:</p></div></div>",
    "choices": [
      {
        "label": "Test console",
        "value": "Send a test prompt to verify the console is working correctly after the bug fix",
        "primary": true
      },
      {
        "label": "View logs",
        "value": "Show the latest konui logs to verify no more JavaScript errors"
      },
      {
        "label": "Run more telemetry",
        "value": "Run the telemetry-dashboard script again to verify it no longer crashes the console"
      }
    ],
    "requestedAt": "2026-01-03T18:33:00.000Z",
    "requestId": "333b71eb-536e-4c3f-b208-8742c26c50fb"
  },
  "createdBy": "claude",
  "createdAt": "2026-01-03T08:35:31.564Z",
  "updatedAt": "2026-01-03T08:35:31.946Z",
  "requestId": "333b71eb-536e-4c3f-b208-8742c26c50fb",
  "scope": "vibetools",
  "tags": [
    "console",
    "bug-fix",
    "stability"
  ],
  "targetUser": "claude"
}
DashboardReportsKontasksSessionsTelemetryLogs + Go