moeru-ai/airi · warning

Error stopping Web Speech API recognition:

Error message

Error stopping Web Speech API recognition:

What it means

During hearing-session teardown, result.recognition.stop() on the embedded Web Speech API recognition threw — commonly an InvalidStateError because recognition already ended or was aborted. It is caught in a nested try so teardown continues: the idle timer is cleared and streamingSession is cleared regardless. The recognition instance is discarded either way, so the warning is cosmetic.

Source

Thrown at packages/stage-ui/src/stores/modules/hearing.ts:675

      asrSpan = undefined
    }

    // Special handling for Web Speech API
    if (session.providerId === 'browser-web-speech-api') {
      try {
        const reason = new DOMException(abort ? 'Aborted' : 'Stopped', 'AbortError')
        if (!session.abortController.signal.aborted) {
          session.abortController.abort(reason)
        }

        // Stop Web Speech API recognition if it exists
        const result = session.result as any
        if (result?.recognition) {
          try {
            result.recognition.stop()
          }
          catch (err) {
            console.warn('Error stopping Web Speech API recognition:', err)
          }
        }
      }
      catch (err) {
        console.error('Error stopping Web Speech API session:', err)
      }

      if (session.idleTimer)
        clearTimeout(session.idleTimer)

      streamingSession.value = undefined

      if (session.result?.mode === 'stream') {
        try {
          const text = await session.result.text
          return text
        }
        catch (err) {

View on GitHub (pinned to f679616c34)

Solutions

1. Ignore it — the recognition instance is discarded anyway and teardown completed
2. Guard stop() with the recognition state or drop the reference before calling stop
3. Debounce rapid start/stop of the mic to avoid double-stop races
4. Abort the session controller first and skip stop() when the signal already aborted

const result = session.result as any
if (!result?.recognition) return // no embedded Web Speech instance to stop

try {
  result.recognition.stop()
}
catch (err) {
  // InvalidStateError is expected when recognition already ended; teardown continues
  console.warn('Error stopping Web Speech API recognition:', err)
}

When it happens

Trigger: Mic start/stop toggled rapidly so stop() runs after recognition already ended; recognition auto-disconnected (tab switch, permission revoked) before teardown; abort fired first and stop() then throws InvalidStateError.

Common situations: Push-to-talk toggled quickly; browser revoking mic permission mid-session; Safari/Chrome differences in Web Speech lifecycle.

Related errors

• Error stopping recognition instance:
• Web Speech API is not available in this environment. It requ
• Web Speech API error:
• Web Speech API: Microphone access issue. Please check microp
• Web Speech API failed to restart, creating new instance:

AI-assisted analysis of moeru-ai/airi@f679616c34 (2026-08-18). Data as JSON: /api/errors/60d38261e2a9d171. Report an issue: GitHub.