[해결] TypeError: Failed to fetch

ERROR CODE: 

index.js:1 TypeError: Failed to fetch
    at searchCode (:3000/static/js/main.chunk.js:3348:5)
    at HTMLUnknownElement.callCallback (:3000/static/js/vendors~main.chunk.js:17235:18)
    at Object.invokeGuardedCallbackDev (:3000/static/js/vendors~main.chunk.js:17284:20)
    at invokeGuardedCallback (:3000/static/js/vendors~main.chunk.js:17346:35)
    at invokeGuardedCallbackAndCatchFirstError (:3000/static/js/vendors~main.chunk.js:17361:29)
    at executeDispatch (:3000/static/js/vendors~main.chunk.js:22190:7)
    at processDispatchQueueItemsInOrder (:3000/static/js/vendors~main.chunk.js:22222:11)
    at processDispatchQueue (:3000/static/js/vendors~main.chunk.js:22235:9)
    at dispatchEventsForPlugins (:3000/static/js/vendors~main.chunk.js:22246:7)
    at :3000/static/js/vendors~main.chunk.js:22438:16
    at batchedUpdates$1 (:3000/static/js/vendors~main.chunk.js:39073:16)
    at batchedUpdates (:3000/static/js/vendors~main.chunk.js:17061:16)
    at dispatchEventForPluginEventSystem (:3000/static/js/vendors~main.chunk.js:22437:7)
    at dispatchEventWithEnableCapturePhaseSelectiveHydrationWithoutDiscreteEventReplay (:3000/static/js/vendors~main.chunk.js:19613:9)
    at dispatchEvent (:3000/static/js/vendors~main.chunk.js:19605:9)
    at dispatchDiscreteEvent (:3000/static/js/vendors~main.chunk.js:19578:9)

TRY

 

여러가지 찾아봤다. https 를 http 로 바꿔라 (안됨), 서버 다시 껐다 켜봐라 (안됨), fetch 구조도 바꿔봤는데 안됨

 

이리저리 하다가 

 

SOLVED

e.preventDefault();

이거 넣으니까 됐다. 아니 근데 아까도 이거 한거같은데 왜 그땐 안됐지? 오늘도 느끼는 알 수 없는 코딩 세계

 

const searchUser = (e) => {
        e.preventDefault();
        
        fetch('/search/' + userID)
            .then(res => res.json())
            .then(data => console.log(data))
            .catch(err => console.error(err))
    }