이유를 알수없어서 영상을 다시보면서 해결했습니다 ^.^ 제생각에 아마도 nodemon server로 npm start를 해서 그런것같습니다. nodemon server.js 로 수정하였고 나머지 문법오류난것들 수정하여서 해결했습니다~~ 좋은강의 감사드리고 해당과정 심화과정으로 만들어주시면 너무좋겠습니다 ㅠㅠ
--- 브라우저내 콘솔오류 에러 발생 : Error: Network Error at createError (createError.js:16) at XMLHttpRequest.handleError (xhr.js:84) console. @ index.js:1 (anonymous) @ index.js:20 :8080/products:1 Failed to load resource: net::ERR_CONNECTION_REFUSED --- .서버쪽 오류 [nodemon] restarting due to changes... [nodemon] starting `node server index.js` grab market server on! events.js:292 throw er; // Unhandled 'error' event ^ Error [ERR_STREAM_WRITE_AFTER_END]: write after end at writeAfterEnd (_http_outgoing.js:668:15) at ServerResponse.end (_http_outgoing.js:789:7) at Server. (C:\Users\djdjd\Desktop\grab-market-server\index.js:22:7) at Server.emit (events.js:315:20) at parserOnIncoming (_http_server.js:874:12) at HTTPParser.parserOnHeadersComplete (_http_common.js:126:17) Emitted 'error' event on ServerResponse instance at: at writeAfterEndNT (_http_outgoing.js:727:7) at processTicksAndRejections (internal/process/task_queues.js:81:21) { code: 'ERR_STREAM_WRITE_AFTER_END' } [nodemon] app crashed - waiting for file changes before starting...