deepseek-ai/deepseek-harness · error

UNKNOWN

UNKNOWN

Error message

errorChain(error)

What it means

Error "errorChain(error)" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/core/agent-loop/src/agent.ts:313

        if (turnEnds && this.inbox.nextStep.length === 0) {
          await this.dispatch.serial('agent/turn-stopping', { turn, signal })
          signal.throwIfAborted()
        }
        if (turnEnds && this.inbox.nextStep.length === 0) break
        target = 'next-step'
      }
    } catch (error: unknown) {
      if (signal.aborted) {
        turnEnds = { kind: 'aborted', reason: signal.reason as AgentCancelCause }
        throw error
      }
      // Every failure is structured: an `LlmError` keeps its facts, anything
      // else flattens to `errorChain` text under the `UNKNOWN` code.
      turnEnds = {
        kind: 'error',
        error: error instanceof LlmError
          ? error.failure
          : { message: errorChain(error), code: 'UNKNOWN' },
      }
      this.throwError(error)
    } finally {
      try {
        // oxlint-disable-next-line typescript/no-non-null-assertion -- every exit assigns a turn ending
        this.session.append('turn/end', { turn, reason: turnEnds! })
      } catch (error: unknown) {
        this.throwError(error)
      }
    }
    if (!this.inbox.hasPending) return false
    phase.abort = new AbortController()
    // A fresh controller makes a latch set on the old one stale: the live driver claims the queue itself.
    phase.wakeRequested = false
    phase.step = 0
    return true
  }

View on GitHub (pinned to b150a551b8)

Solutions

1. Inspect the wrapped error chain in the surrounding log context; this message forwards the chain of an underlying failure, so fix the root cause it names.

When it happens

Trigger: Thrown at packages/core/agent-loop/src/agent.ts:313 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/1f980646cd73fe0f. Report an issue: GitHub.