NousResearch/hermes-agent · error · Error

real stream never started (no LLM credit / backend?)

Error message

real stream never started (no LLM credit / backend?)

What it means

Error "real stream never started (no LLM credit / backend?)" thrown in NousResearch/hermes-agent.

Source

Thrown at apps/desktop/scripts/perf/scenarios/stream.mjs:182

        const el = document.querySelector(${JSON.stringify(SELECTORS.composer)})
        el && el.dispatchEvent(new KeyboardEvent('keydown', { key: 'Enter', code: 'Enter', bubbles: true, cancelable: true }))
      })()`)

      const deadline = Date.now() + Number(opts.timeoutMs ?? 60000)
      let started = false

      while (Date.now() < deadline) {
        await sleep(50)
        const n = await cdp.eval(`document.querySelectorAll(${JSON.stringify(SELECTORS.assistantMessage)}).length`)

        if (n > baseCount) {
          started = true
          break
        }
      }

      if (!started) {
        throw new Error('real stream never started (no LLM credit / backend?)')
      }

      await cdp.eval('window.__MO__.arm()')
      // Let it run to completion or timeout.
      const runDeadline = Date.now() + Number(opts.runMs ?? 30000)

      while (Date.now() < runDeadline) {
        await sleep(250)
        const busy = await cdp.eval(`!!document.querySelector('[data-status="running"], [data-busy="true"]')`)

        if (!busy) {
          break
        }
      }
    } else {
      // Synthetic path: drive $messages directly. No LLM, no credits.
      await cdp.eval(
        `window.__PERF_DRIVE__.stream({ chunk: ${JSON.stringify(chunk)}, intervalMs: ${intervalMs}, totalTokens: ${tokens}, flushMinMs: ${flushMinMs} })`

View on GitHub (pinned to c896c09c42)

Solutions

1. Confirm the backend has LLM credentials and quota, then retry.
2. Run with the synthetic stream path instead of a real LLM stream.
3. Check gateway logs for the stream start failure.

When it happens

Trigger: Thrown at apps/desktop/scripts/perf/scenarios/stream.mjs:182 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of NousResearch/hermes-agent@c896c09c42 (2026-08-14). Data as JSON: /api/errors/b7dc87d63f4e0ac8. Report an issue: GitHub.