unknown error when run async func

when I run my application, the error was catch by pool.execute(...).then(...).catch(...):

Error:      at /data/node_modules/poolifier/lib/workers.js:67:19\\n     at processTicksAndRejections (internal/process/task_queues.js:94:5)

any idea?

[NeoyeElf]

I figured it out. the real error is: (after I add error log before the line 70)

_runAsync error DOMException [DataCloneError]: [object Object] could not be cloned.
    at /Applications/workspace/shimo/svc-sas-runner/node_modules/poolifier/lib/workers.js:67:19
    at processTicksAndRejections (internal/process/task_queues.js:97:5)

and I print my return value res from worker:

{
  success: true,
  result: [
    { label: '嘿嘿嘿', type: '文本' },
    { label: 'time', type: '日期' },
    { label: '这是数字', type: '数字' }
  ],
  log: '_EMPTY_LOG_',
  status: 'success',
  execTime: 715
}

Before I return the res, I add res.result = JSON.stringify(result), then it works fine.

My questions are:

1. Why my return value triggered this bug?
2. the error catch by pool.execute seems lack error.message, only contains the error.stack?

[NeoyeElf]

I will try