deepseek-ai/deepseek-harness · error · WorkflowError

INVALID_ARGUMENT

INVALID_ARGUMENT

Error message

workflow subagentProvider must be a non-empty normalized string

What it means

Error "workflow subagentProvider must be a non-empty normalized string" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/workflow/workflow-worker-thread/src/index.ts:80

 * wrapper's bare SyntaxError — the model's likeliest authoring slip.
 */
function assertBodyParses(body: string, name: string): void {
  if (META_STATEMENT.test(body)) {
    throw new WorkflowError('workflow meta rides the `meta` request field, not the script: remove the `export const meta = {...}` statement from the body', 'SCRIPT_PARSE')
  }
  try {
    // Parse only — the script object is discarded, nothing executes.
    void new vm.Script(`(async () => {\n${body}\n})()`, { filename: `workflow:${name}`, lineOffset: -1 })
  } catch (error: unknown) {
    throw new WorkflowError(`workflow script does not parse: ${String(error)}`, 'SCRIPT_PARSE', { cause: error })
  }
}

/** Resolve one run's provider route before publishing work. */
function resolveSubagentProvider(ctx: Context, configured: string, override: string | undefined): string {
  const provider = override ?? configured
  if (provider.length === 0 || provider !== provider.trim()) {
    throw new WorkflowError(
      'workflow subagentProvider must be a non-empty normalized string',
      'INVALID_ARGUMENT',
    )
  }
  if (ctx.subagents.getProvider(provider) === undefined) {
    throw new WorkflowError(`no subagent provider registered for "${provider}"`, 'AGENT_START')
  }
  return provider
}

/** Resolve one run's total-child cap against the engine deployment ceiling. */
function resolveMaxTotalAgents(requested: number | undefined, ceiling: number): number {
  if (requested === undefined) return ceiling
  if (!Number.isSafeInteger(requested) || requested < 1) {
    throw new WorkflowError('workflow maxTotalAgents must be a positive safe integer', 'INVALID_ARGUMENT')
  }
  if (requested > ceiling) {
    throw new WorkflowError(

View on GitHub (pinned to b150a551b8)

Solutions

1. Set subagentProvider to a non-empty normalized string in the workflow engine config or request.

When it happens

Trigger: Thrown at packages/workflow/workflow-worker-thread/src/index.ts:80 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/968a8eb8d382830a. Report an issue: GitHub.