整个报错是这样的:
Uncaught Error Error: connect ECONNREFUSED ::1:8080
at __node_internal_captureLargerStackTrace (internal/errors:490:5)
at __node_internal_exceptionWithHostPort (internal/errors:668:12)
at afterConnect (net:1494:16) at callbackTrampoline (internal/async_hooks:130:17)
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