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크롬console에는 이렇게 나오네요

ncaught (in promise) Error: Request failed with status code 504
    at createError (createError.js:16:1)
    at settle (settle.js:17:1)
    at XMLHttpRequest.handleLoad (xhr.js:61:1)
createError @ createError.js:16
settle @ settle.js:17
handleLoad @ xhr.js:61
Promise.then (async)
dropHandler @ FileUpload.js:19
(anonymous) @ index.js:708
(anonymous) @ index.js:759
Promise.then (async)
(anonymous) @ index.js:758
(anonymous) @ index.js:831
(anonymous) @ index.js:192
(anonymous) @ index.js:190
callCallback @ react-dom.development.js:188
invokeGuardedCallbackDev @ react-dom.development.js:237
invokeGuardedCallback @ react-dom.development.js:292
invokeGuardedCallbackAndCatchFirstError @ react-dom.development.js:306
executeDispatch @ react-dom.development.js:389
executeDispatchesInOrder @ react-dom.development.js:414
executeDispatchesAndRelease @ react-dom.development.js:3278
executeDispatchesAndReleaseTopLevel @ react-dom.development.js:3287
forEachAccumulated @ react-dom.development.js:3259
runEventsInBatch @ react-dom.development.js:3304
runExtractedPluginEventsInBatch @ react-dom.development.js:3514
handleTopLevel @ react-dom.development.js:3558
batchedEventUpdates$1 @ react-dom.development.js:21871
batchedEventUpdates @ react-dom.development.js:795
dispatchEventForLegacyPluginEventSystem @ react-dom.development.js:3568
attemptToDispatchEvent @ react-dom.development.js:4267
dispatchEvent @ react-dom.development.js:4189
unstable_runWithPriority @ scheduler.development.js:653
runWithPriority$1 @ react-dom.development.js:11039
discreteUpdates$1 @ react-dom.development.js:21887
discreteUpdates @ react-dom.development.js:806
dispatchDiscreteEvent @ react-dom.development.js:4168
xhr.js:178          POST http://localhost:3000/api/product/image 504 (Gateway Timeout)
dispatchXhrRequest @ xhr.js:178
xhrAdapter @ xhr.js:12
dispatchRequest @ dispatchRequest.js:52
Promise.then (async)
request @ Axios.js:61
Axios.<computed> @ Axios.js:86
wrap @ bind.js:9
dropHandler @ FileUpload.js:19
(anonymous) @ index.js:708
(anonymous) @ index.js:759
Promise.then (async)
(anonymous) @ index.js:758
(anonymous) @ index.js:831
(anonymous) @ index.js:192
(anonymous) @ index.js:190
callCallback @ react-dom.development.js:188
invokeGuardedCallbackDev @ react-dom.development.js:237
invokeGuardedCallback @ react-dom.development.js:292
invokeGuardedCallbackAndCatchFirstError @ react-dom.development.js:306
executeDispatch @ react-dom.development.js:389
executeDispatchesInOrder @ react-dom.development.js:414
executeDispatchesAndRelease @ react-dom.development.js:3278
executeDispatchesAndReleaseTopLevel @ react-dom.development.js:3287
forEachAccumulated @ react-dom.development.js:3259
runEventsInBatch @ react-dom.development.js:3304
runExtractedPluginEventsInBatch @ react-dom.development.js:3514
handleTopLevel @ react-dom.development.js:3558
batchedEventUpdates$1 @ react-dom.development.js:21871
batchedEventUpdates @ react-dom.development.js:795
dispatchEventForLegacyPluginEventSystem @ react-dom.development.js:3568
attemptToDispatchEvent @ react-dom.development.js:4267
dispatchEvent @ react-dom.development.js:4189
unstable_runWithPriority @ scheduler.development.js:653
runWithPriority$1 @ react-dom.development.js:11039
discreteUpdates$1 @ react-dom.development.js:21887
discreteUpdates @ react-dom.development.js:806
dispatchDiscreteEvent @ react-dom.development.js:4168
createError.js:16 Uncaught (in promise) Error: Request failed with status code 504
    at createError (createError.js:16:1)
    at settle (settle.js:17:1)
    at XMLHttpRequest.handleLoad (xhr.js:61:1)