nodejs報錯解決：Error: Can only perform operation while paused. - undefined

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下午在用nodejs進行調試時遇到報錯：

debug> n
Thrown:
Error: Can only perform operation while paused. - undefined
    at _pending.<computed> (internal/deps/node-inspect/lib/internal/inspect_client.js:243:27)
    at Client._handleChunk (internal/deps/node-inspect/lib/internal/inspect_client.js:213:11)
    at Socket.emit (events.js:223:5)
    at Socket.EventEmitter.emit (domain.js:475:20)
    at addChunk (_stream_readable.js:309:12)
    at readableAddChunk (_stream_readable.js:290:11)
    at Socket.Readable.push (_stream_readable.js:224:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:181:23) {
  code: -32000
}
break in search.js:34

這個報錯是因爲程序還在等待：await sleep(1000);，這時候自然不能運行下一步。