# Zoom Errors Preventing Page load (React App) **URL:** \ **Category:** Web\ **Created:** [June 22, 2020, 3:39am UTC](https://devforum.zoom.us/t/zoom-errors-preventing-page-load-react-app/21978 "2020-06-22T03:39:09Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![dhruva.juloori](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/dhruva.juloori/32/10852_2.png) [@dhruva.juloori](https://devforum.zoom.us/u/dhruva.juloori)\ **Post date:** [June 22, 2020, 3:39am UTC](https://devforum.zoom.us/t/zoom-errors-preventing-page-load-react-app/21978/1 "2020-06-22T03:39:09Z")
**Description** I am using zoom websdk 1.7.8 in my application and able to get zoom working in dev mode. But when i build it in production i get error preventing my page load. I get a blank screen **Error** localhost/:1 Uncaught SyntaxError: Unexpected end of JSON input at JSON.parse () at e.readIvSession (zoomus-websdk.umd.min.js:12941) at e.initIvState (zoomus-websdk.umd.min.js:12926) at e.reset (zoomus-websdk.umd.min.js:12918) at new e (zoomus-websdk.umd.min.js:12950) at Object.e.exports (zoomus-websdk.umd.min.js:12913) at n (zoomus-websdk.umd.min.js:15) at Object.e.exports (zoomus-websdk.umd.min.js:65339) at n (zoomus-websdk.umd.min.js:15) at Object.e.exports (zoomus-websdk.umd.min.js:12056) **Which version?** zoom websdk 1.7.8 **Smartphone (please complete the following information):** Tried it in chrome and firefox ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [June 22, 2020, 9:52pm UTC](https://devforum.zoom.us/t/zoom-errors-preventing-page-load-react-app/21978/2 "2020-06-22T21:52:12Z")
Hey @dhruva.juloori, Please see this thread: > [@Unexpected end of JSON when source map disabled](https://devforum.zoom.us/t/unexpected-end-of-json-when-source-map-disabled/19264): > > Hi team @ Zoom I’m able to instantiate the web sdk (1.7.8) locally successfully, using webpack having enabled source map ([webpack devtool documentation](https://webpack.js.org/configuration/devtool/) ‘eval-source-map’), I’ve noticed disabling source map in webpack caused my front end application to throw the following error Are you able to confirm this? Is there a solution that doesn’t require the need to ship source maps? Thank you Just for reference, i’ll list what my front end application contains pa… Thanks, Tommy ---
**Author:** ![dhruva.juloori](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/dhruva.juloori/32/10852_2.png) [@dhruva.juloori](https://devforum.zoom.us/u/dhruva.juloori)\ **Post date:** [June 22, 2020, 10:47pm UTC](https://devforum.zoom.us/t/zoom-errors-preventing-page-load-react-app/21978/3 "2020-06-22T22:47:10Z")
Hi Tommy, I was able to resolve the issue by upgrading react-scripts to 3.4.1, I still have some css problems when i start the meeting. Could you please point me to some relevant threads? Thanks ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [June 24, 2020, 8:08pm UTC](https://devforum.zoom.us/t/zoom-errors-preventing-page-load-react-app/21978/4 "2020-06-24T20:08:13Z")
Hey @dhruva.juloori, Happy to hear you fixed the issue! 🙂 What are the CSS issues you are having? Thanks, Tommy ---
**Author:** ![muhamadangga609](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/muhamadangga609/32/5880_2.png) [@muhamadangga609](https://devforum.zoom.us/u/muhamadangga609)\ **Post date:** [July 16, 2020, 8:55am UTC](https://devforum.zoom.us/t/zoom-errors-preventing-page-load-react-app/21978/5 "2020-07-16T08:55:15Z")
how to fix this issue without upgrading react-scripts ?? ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [July 20, 2020, 7:35pm UTC](https://devforum.zoom.us/t/zoom-errors-preventing-page-load-react-app/21978/6 "2020-07-20T19:35:20Z")
Hey @muhamadangga609, What is your use case for not wanting to upgrade react-scripts? Thanks, Tommy ---
**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\ **Post date:** [August 21, 2020, 10:46pm UTC](https://devforum.zoom.us/t/zoom-errors-preventing-page-load-react-app/21978/7 "2020-08-21T22:46:59Z")