deepseek-ai/deepseek-harness · error · Error

malformed ${tag} storage row: ${why}

Error message

malformed ${tag} storage row: ${why}

What it means

Error "malformed ${tag} storage row: ${why}" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/core/session/src/chunk-rows.ts:225

      continue
    }
    const delta = event as DeltaEvent
    const last = run[run.length - 1]
    if (k === kind && last !== undefined && continues(last, delta, k)) {
      run.push(delta)
      continue
    }
    flush()
    kind = k
    run = [delta]
  }
  flush()
  return out
}

/** Throw the uniform malformed-row diagnostic. */
function malformed(tag: string, why: string): never {
  throw new Error(`malformed ${tag} storage row: ${why}`)
}

/** Validate the shared run-data fields and the payload/dt arity; returns the member payload. */
function validateRunData(tag: string, data: Record<string, unknown>, payloadKey: 'texts' | 'args'): string[] {
  if (typeof data.turn !== 'number' || typeof data.step !== 'number' || typeof data.index !== 'number') {
    malformed(tag, 'turn/step/index must be numbers')
  }
  const payload = data[payloadKey]
  if (!Array.isArray(payload) || payload.length === 0 || payload.some(entry => typeof entry !== 'string')) {
    malformed(tag, `${payloadKey} must be a non-empty string array`)
  }
  const dt = data.dt
  if (!Array.isArray(dt) || dt.some(gap => !Number.isSafeInteger(gap))) {
    malformed(tag, 'dt must be an array of safe integers')
  }
  if (dt.length !== payload.length - 1) {
    malformed(tag, `dt length ${dt.length} does not match ${payload.length} members`)
  }

View on GitHub (pinned to b150a551b8)

Solutions

1. Repair or delete the malformed storage row described by the reason.

When it happens

Trigger: Thrown at packages/core/session/src/chunk-rows.ts:225 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/db73532aac239b8e. Report an issue: GitHub.