# Users is greeted with blank page : TypeError: e is undefined **URL:** \ **Category:** Troubleshooting\ **Created:** [March 8, 2021, 12:56pm UTC](https://forum.mattermost.com/t/users-is-greeted-with-blank-page-typeerror-e-is-undefined/11336 "2021-03-08T12:56:12Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![arthur.toussaint](https://avatars.discourse-cdn.com/v4/letter/a/e47774/32.png) [@arthur.toussaint](https://forum.mattermost.com/u/arthur.toussaint)\ **Post date:** [March 8, 2021, 12:56pm UTC](https://forum.mattermost.com/t/users-is-greeted-with-blank-page-typeerror-e-is-undefined/11336/1 "2021-03-08T12:56:13Z")
#### Summary One of our users has a blank page after logging in, a lot of things seem to work, he receives notifications, but the UI does not fully loads, the page stays blank. This only happens for one user #### Steps to reproduce We are using the mattermost gitlab integration, mattermost is Mattermost Version: 5.31.1, with Database Schema Version: 5.30.0 (is this normal, have I missed a schema upgrade ?) Gitlab is installed with the docker method #### Expected behavior The UI is expected to load #### Observed behavior Again, blank screen, in the console, one error seems different than the other users : ```auto TypeError: e is undefined Be utils.jsx:498 Fe utils.jsx:867 componentDidMount needs_team.tsx:141 React 2 unstable_runWithPriority scheduler.production.min.js:19 React 4 unstable_runWithPriority scheduler.production.min.js:19 React 2 j scheduler.production.min.js:17 onmessage scheduler.production.min.js:14 EventHandlerNonNull* scheduler.production.min.js:13 Webpack 13 react-dom.production.min.js:209:194 React 5 unstable_runWithPriority scheduler.production.min.js:19 React 4 unstable_runWithPriority scheduler.production.min.js:19 React 2 j scheduler.production.min.js:17 onmessage scheduler.production.min.js:14 (Async: EventHandlerNonNull) scheduler.production.min.js:13 Webpack 13 ``` The js files seems to redirect to ```auto cssVars({ variables: { // RGB values derived from theme hex values i.e. '255, 255, 255' // (do not apply opacity mutations here) 'away-indicator-rgb': toRgbValues(theme.awayIndicator), 'button-bg-rgb': toRgbValues(theme.buttonBg), 'button-color-rgb': toRgbValues(theme.buttonColor), 'center-channel-bg-rgb': toRgbValues(theme.centerChannelBg), 'center-channel-color-rgb': toRgbValues(theme.centerChannelColor), 'dnd-indicator-rgb': toRgbValues(theme.dndIndicator), 'error-text-color-rgb': toRgbValues(theme.errorTextColor), 'link-color-rgb': toRgbValues(theme.linkColor), 'mention-bg-rgb': toRgbValues(theme.mentionBg), 'mention-color-rgb': toRgbValues(theme.mentionColor), 'mention-highlight-bg-rgb': toRgbValues(theme.mentionHighlightBg), 'mention-highlight-link-rgb': toRgbValues(theme.mentionHighlightLink), 'new-message-separator-rgb': toRgbValues(theme.newMessageSeparator), 'online-indicator-rgb': toRgbValues(theme.onlineIndicator), 'sidebar-bg-rgb': toRgbValues(theme.sidebarBg), 'sidebar-header-bg-rgb': toRgbValues(theme.sidebarHeaderBg), 'sidebar-header-text-color-rgb': toRgbValues(theme.sidebarHeaderTextColor), 'sidebar-text-rgb': toRgbValues(theme.sidebarText), 'sidebar-text-active-border-rgb': toRgbValues(theme.sidebarTextActiveBorder), 'sidebar-text-active-color-rgb': toRgbValues(theme.sidebarTextActiveColor), 'sidebar-text-hover-bg-rgb': toRgbValues(theme.sidebarTextHoverBg), 'sidebar-unread-text-rgb': toRgbValues(theme.sidebarUnreadText), // Hex CSS variables // TODO: phase out changeOpacity() here 'sidebar-bg': theme.sidebarBg, 'sidebar-text': theme.sidebarText, 'sidebar-text-08': changeOpacity(theme.sidebarText, 0.08), 'sidebar-text-16': changeOpacity(theme.sidebarText, 0.16), 'sidebar-text-30': changeOpacity(theme.sidebarText, 0.3), 'sidebar-text-40': changeOpacity(theme.sidebarText, 0.4), 'sidebar-text-50': changeOpacity(theme.sidebarText, 0.5), 'sidebar-text-60': changeOpacity(theme.sidebarText, 0.6), 'sidebar-text-72': changeOpacity(theme.sidebarText, 0.72), 'sidebar-text-80': changeOpacity(theme.sidebarText, 0.8), 'sidebar-unread-text': theme.sidebarUnreadText, 'sidebar-text-hover-bg': theme.sidebarTextHoverBg, 'sidebar-text-active-border': theme.sidebarTextActiveBorder, 'sidebar-text-active-color': theme.sidebarTextActiveColor, 'sidebar-header-bg': theme.sidebarHeaderBg, 'sidebar-header-text-color': theme.sidebarHeaderTextColor, 'sidebar-header-text-color-80': changeOpacity(theme.sidebarHeaderTextColor, 0.8), 'online-indicator': theme.onlineIndicator, 'away-indicator': theme.awayIndicator, 'dnd-indicator': theme.dndIndicator, 'mention-bg': theme.mentionBg, 'mention-color': theme.mentionColor, 'center-channel-bg': theme.centerChannelBg, 'center-channel-color': theme.centerChannelColor, 'center-channel-bg-88': changeOpacity(theme.centerChannelBg, 0.88), 'center-channel-color-88': changeOpacity(theme.centerChannelColor, 0.88), 'center-channel-bg-80': changeOpacity(theme.centerChannelBg, 0.8), 'center-channel-color-80': changeOpacity(theme.centerChannelColor, 0.8), 'center-channel-color-72': changeOpacity(theme.centerChannelColor, 0.72), 'center-channel-bg-64': changeOpacity(theme.centerChannelBg, 0.64), 'center-channel-color-64': changeOpacity(theme.centerChannelColor, 0.64), 'center-channel-bg-56': changeOpacity(theme.centerChannelBg, 0.56), 'center-channel-color-56': changeOpacity(theme.centerChannelColor, 0.56), 'center-channel-color-48': changeOpacity(theme.centerChannelColor, 0.48), 'center-channel-bg-40': changeOpacity(theme.centerChannelBg, 0.4), 'center-channel-color-40': changeOpacity(theme.centerChannelColor, 0.4), 'center-channel-bg-30': changeOpacity(theme.centerChannelBg, 0.3), 'center-channel-color-32': changeOpacity(theme.centerChannelColor, 0.32), 'center-channel-bg-20': changeOpacity(theme.centerChannelBg, 0.2), 'center-channel-color-20': changeOpacity(theme.centerChannelColor, 0.2), 'center-channel-bg-16': changeOpacity(theme.centerChannelBg, 0.16), 'center-channel-color-24': changeOpacity(theme.centerChannelColor, 0.24), 'center-channel-color-16': changeOpacity(theme.centerChannelColor, 0.16), 'center-channel-bg-08': changeOpacity(theme.centerChannelBg, 0.08), 'center-channel-color-08': changeOpacity(theme.centerChannelColor, 0.08), 'center-channel-color-04': changeOpacity(theme.centerChannelColor, 0.04), 'new-message-separator': theme.newMessageSeparator, 'link-color': theme.linkColor, 'link-color-08': changeOpacity(theme.linkColor, 0.08), 'button-bg': theme.buttonBg, 'button-color': theme.buttonColor, 'button-bg-88': changeOpacity(theme.buttonBg, 0.88), 'button-color-88': changeOpacity(theme.buttonColor, 0.88), 'button-bg-80': changeOpacity(theme.buttonBg, 0.8), 'button-color-80': changeOpacity(theme.buttonColor, 0.8), 'button-bg-72': changeOpacity(theme.buttonBg, 0.72), 'button-color-72': changeOpacity(theme.buttonColor, 0.72), 'button-bg-64': changeOpacity(theme.buttonBg, 0.64), 'button-color-64': changeOpacity(theme.buttonColor, 0.64), 'button-bg-56': changeOpacity(theme.buttonBg, 0.56), 'button-color-56': changeOpacity(theme.buttonColor, 0.56), 'button-bg-48': changeOpacity(theme.buttonBg, 0.48), 'button-color-48': changeOpacity(theme.buttonColor, 0.48), 'button-bg-40': changeOpacity(theme.buttonBg, 0.4), 'button-color-40': changeOpacity(theme.buttonColor, 0.4), 'button-bg-30': changeOpacity(theme.buttonBg, 0.32), 'button-color-32': changeOpacity(theme.buttonColor, 0.32), 'button-bg-24': changeOpacity(theme.buttonBg, 0.24), 'button-color-24': changeOpacity(theme.buttonColor, 0.24), 'button-bg-16': changeOpacity(theme.buttonBg, 0.16), 'button-color-16': changeOpacity(theme.buttonColor, 0.16), 'button-bg-08': changeOpacity(theme.buttonBg, 0.08), 'button-color-08': changeOpacity(theme.buttonColor, 0.08), 'button-bg-04': changeOpacity(theme.buttonBg, 0.04), 'button-color-04': changeOpacity(theme.buttonColor, 0.04), 'error-text': theme.errorTextColor, 'error-text-08': changeOpacity(theme.errorTextColor, 0.08), 'error-text-12': changeOpacity(theme.errorTextColor, 0.12), 'mention-highlight-bg': theme.mentionHighlightBg, 'mention-highlight-link': theme.mentionHighlightLink, }, }); ``` Idk if the theme does not exists, so I reset the theme in the db, but it didn’t help, I tried deactivating and reactivating the user, we tried on different browsers and computers, but the same thing always happens =/ Any help would be greatly appreciated ---
**Author:** ![XxLilBoPeepsxX](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/xxlilbopeepsxx/32/4993_2.png) [@XxLilBoPeepsxX](https://forum.mattermost.com/u/XxLilBoPeepsxX)\ **Post date:** [March 9, 2021, 10:37pm UTC](https://forum.mattermost.com/t/users-is-greeted-with-blank-page-typeerror-e-is-undefined/11336/2 "2021-03-09T22:37:16Z")
Does the specific user have any unique permissions, settings, or related items that have been changed to differ from other users? ---
**Author:** ![ahmaddanial](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/ahmaddanial/32/2938_2.png) [@ahmaddanial](https://forum.mattermost.com/u/ahmaddanial)\ **Post date:** [March 9, 2021, 11:44pm UTC](https://forum.mattermost.com/t/users-is-greeted-with-blank-page-typeerror-e-is-undefined/11336/3 "2021-03-09T23:44:19Z")
Hi, @arthur.toussaint On top of the question asked by @XxLilBoPeepsxX , can we please confirm if this issue is reproducible across all sessions (desktop app / web browser / mobile app)? If the user is using web browser, can he/she confirm that the issue is also reproducible on the Incognito mode too? Since you mentioned that it is happening for one user only, I would like to see if this could be an environment specific issue. ---
**Author:** ![arthur.toussaint](https://avatars.discourse-cdn.com/v4/letter/a/e47774/32.png) [@arthur.toussaint](https://forum.mattermost.com/u/arthur.toussaint)\ **Post date:** [March 10, 2021, 12:58pm UTC](https://forum.mattermost.com/t/users-is-greeted-with-blank-page-typeerror-e-is-undefined/11336/4 "2021-03-10T12:58:52Z")
So I finally fixed it, it was a provlem with a typo in the code that wasn’t fixed, so I had to put a breakpoint before the error, do something like e.mentionBg = e.mentionBj; then I was able to access the account, and change the theme, and it fixed it I guess I could have modified it server-side, but in the end it works