常见问题
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KCFErrordomainCFNetWork 303 [1]_ ::

    http请求header过大，超过了阈值,这是因为滥用UA和Cookie导致



node版本太低::

  SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode






.. [1] https://blog.csdn.net/u012413955/article/details/90724229