I forgot to mention that, when we run the page in preview mode, this error never occurred, but when the end-user ran the page, the error message is shown. 

What steps do you take to see the error? Do you see it on every page every time? Is there any more information you can provide regarding this?

Our skuid page has a tab, on the tab, we are querying more than 3 models, we have found out that there is 1 of 3 models causing the error. We only encountered this in real LX Page, we didn’t get this error on the visualforce page or in the preview mode of Skuid.
Those lines below, which we have caught it from the developer console of the browser:

"while(1);<br>{"actions":n{"id":"1249;a","state":"ERROR","returnValue":null,"error":o{"message":"An internal server error has occurred

Error ID: 389899907-2987 (119852647)"}]}],"context":{"mode":"PROD","app":"one:one","fwuid":"SmRJU03B8s021__0zcxFxw","loaded":{"COMPONENT@markup://one:consoleTabset":"mytscCglTGR2nl4MDWVMwg","APPLICATION@markup://one:one":"2upqREdtzzdfV8ffGPYjXw","COMPONENT@markup://forceChatter:recordFeedContainer":"YxlRarH8cS6Xe-iujwtxBQ","COMPONENT@markup://one:utilityBarContent":"rFzBRnUN9LNEGOOjP-HV5A","COMPONENT@markup://force:socialImage":"FGwtwEJHd5VlTug2iueMuw","COMPONENT@markup://onesetup:allHome":"qVAjvPK1iPrmCgAc0D0Uig","COMPONENT@markup://forceChatter:recordFeedContainerDesktop":"A4OUeotAcybG25pk0_3G9Q","COMPONENT@markup://c:DesignFamilyTab":"yG15LBl884LXjv7dsT5Cxg"},"globalValueProviders":r{"type":"$SObjectType","values":{"CurrentUser":{"isChatterEnabled":true,"Email":"trungkienit08@gmail.com","Id":"00510000003JB0f"}}},{"type":"$Locale","values":{"userLocaleLang":"ja","userLocaleCountry":"JP","language":"en","country":"US","variant":"","langLocale":"en_US","nameOfMonths":h{"fullName":"January","shortName":"Jan"},{"fullName":"February","shortName":"Feb"},{"fullName":"March","shortName":"Mar"},{"fullName":"April","shortName":"Apr"},{"fullName":"May","shortName":"May"},{"fullName":"June","shortName":"Jun"},{"fullName":"July","shortName":"Jul"},{"fullName":"August","shortName":"Aug"},{"fullName":"September","shortName":"Sep"},{"fullName":"October","shortName":"Oct"},{"fullName":"November","shortName":"Nov"},{"fullName":"December","shortName":"Dec"},{"fullName":"","shortName":""}],"nameOfWeekdays":y{"fullName":"Sunday","shortName":"SUN"},{"fullName":"Monday","shortName":"MON"},{"fullName":"Tuesday","shortName":"TUE"},{"fullName":"Wednesday","shortName":"WED"},{"fullName":"Thursday","shortName":"THU"},{"fullName":"Friday","shortName":"FRI"},{"fullName":"Saturday","shortName":"SAT"}],"labelForToday":"Today","firstDayOfWeek":1,"timezone":"Asia/Tokyo","isEasternNameStyle":true,"dateFormat":"yyyy/MM/dd","datetimeFormat":"yyyy/MM/dd Hss","timeFormat":"Hss","numberFormat":"#,##0.###","decimal":".","grouping":",","zero":"0","percentFormat":"#,##0%","currencyFormat":"¤#,##0","currencyCode":"JPY","currency":"JPY"}},{"type":"$Browser","values":{"containerVersion":"","isWEBKIT":true,"isIE11":false,"formFactor":"DESKTOP","isWindowsTablet":false,"isIE10":false,"isPhone":false,"isContainer":false,"S1Features":{"isOfflineEnabled":true,"areOfflineDraftsEnabled":false,"isAsyncSaveEnabled":false,"isOfflineQuickActionDraftsEnabled":false,"isUitrkLoggingEnabled":true,"isAuraParallelBootstrapLoadEnabled":true,"useNativeScroller":true,"isTodayPreviewEnabled":false,"isEclairAdvancedFeaturesEnabled":false,"isSFXUrlFormatSupported":true,"isEncryptedStorageEnabled":true,"isAccountSuggestionsEnabled":false,"isAccountLogoEnabled":false,"isSFXInlineEditListViewEnabled":true,"isLVMInAppBuilderEnabled":true,"isS1RecordInlineEditEnabled":false,"isSFXLastViewedListEnabled":false,"isLightningConsoleSplitViewEnabled":false,"isSocialInsightsLogoAdmin":true,"shouldShowEinsteinInsightsHome":false,"homeAssistantCollapseCards":false,"isPersonAccountsEnabled":true,"isPersonAccountsApiLightningEnabled":false,"isFilesSharingPrivacyEnabled":true,"isFlexipageActionSchedulingEnabled":true,"orgHasEinsteinInsightsEnabled":false,"orgHasLightningLiveAgent":false,"sfxRecordPreviewsOff":false,"isFlexipageDeprecatedRendererEnabled":false,"useACTRecordLayoutForStandardObjects":false,"useACTRecordLayoutForEdit":false,"useACTRecordLayoutForCustomObjects":false,"calendarAnythingAllowed":true,"isMultiUserOrgEnabled":true,"isEinsteinBuilderEnabled":false,"isEinsteinBuilderPrefEnabled":false,"isEnhancedTemplatesEnabled":false,"orgHasMatchedLeadsEnabled":false,"isForceRefreshViewEnabled":false},"isBlackBerry":false,"isIE7":false,"isFIREFOX":false,"isIE6":false,"isIE9":false,"isIE8":false,"isDesktop":true,"isWindowsPhone":false,"isTablet":false,"isIPad":false,"isOSX":false,"isAndroid":false,"isIPhone":false,"isIOS":false}},{"type":"$LightningContainer","values":{"communityPrefix":"/","containedContentHost":"amocc--sbx11--c.container.lightning.com"}},{"type":"$Global","values":{"eswConfigDeveloperName":{"writable":true,"defaultValue":""},"isVoiceOver":{"writable":true,"defaultValue":false},"setupAppContextId":{"writable":true,"defaultValue":""},"srcdoc":{"writable":false,"value":true},"appContextId":{"writable":true,"value":"06m0k0000004R3cAAE"},"dynamicTypeSize":{"writable":true,"defaultValue":""}}}],"enableAccessChecks":true,"ls":1,"m":1,"mna":{"lightning":"interop"},"services":c"markup://force:wireServiceSfdc"]},"perfSummary":{"version":"core","request":282,"actions":{"1249;a":{"total":55,"db":8}},"actionsTotal":55,"overhead":0}}" 

Please let us know if there are any queries.

Thank you.

Hi Stephen,

We have found the root cause, it was because one of 3 models had “Model Name” contained the space character, that’s why we got this error.

Thank you.