# Problem with running Zoom Web SDK application **URL:** \ **Category:** Web\ **Created:** [May 21, 2021, 2:26pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769 "2021-05-21T14:26:21Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![epenyblaise](https://avatars.discourse-cdn.com/v4/letter/e/9e8a1a/32.png) [@epenyblaise](https://devforum.zoom.us/u/epenyblaise)\ **Post date:** [May 21, 2021, 2:26pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/1 "2021-05-21T14:26:21Z")
I have a problem with Zoom SDK Web, when I run the application with the npm run start command line I get errors: > websdk-local@1.9.5 start > set NODE\_ENV=development && set BABEL\_ENV=development && webpack serve --config webpack.config.dev.js > sh: 1: webpack: not found Here is the screenshot : ![zoom-erreur](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/8/0/8086384f9bebd982ba6735b3f1bb84c0ac285504.jpeg) How could I correct this error? Thank you in advance for your answers. ---
**Author:** ![alexmayo](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/alexmayo/32/27289_2.png) [@alexmayo](https://devforum.zoom.us/u/alexmayo)\ **Post date:** [May 21, 2021, 2:38pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/2 "2021-05-21T14:38:05Z")
Hi @epenyblaise, Have you ran `npm install` before doing this? The webpack module is missing currently. Thanks, Alex ---
**Author:** ![varsha.lodha](https://avatars.discourse-cdn.com/v4/letter/v/e36b37/32.png) [@varsha.lodha](https://devforum.zoom.us/u/varsha.lodha)\ **Post date:** [May 23, 2021, 3:42am UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/3 "2021-05-23T03:42:49Z")
I have issue with npm run start > websdk-local@1.9.5 start /home/centos/sunstone-ui/sample-app-web/Local > set NODE\_ENV=development && set BABEL\_ENV=development && webpack serve --config webpack.config.dev.js https false disableCORP true ℹ ｢wds｣: Project is running at [http://0.0.0.0:9999/](http://0.0.0.0:9999/) ℹ ｢wds｣: webpack output is served from /static ℹ ｢wds｣: Content not from webpack is served from /home/centos/sunstone-ui/sample-app-web/Local events.js:174 throw er; // Unhandled ‘error’ event ^ Error: spawn chrome ENOENT at Process.ChildProcess.\_handle.onexit (internal/child\_process.js:240:19) at onErrorNT (internal/child\_process.js:415:16) at process.\_tickCallback (internal/process/next\_tick.js:63:19) at Function.Module.runMain (internal/modules/cjs/loader.js:834:11) at startup (internal/bootstrap/node.js:283:19) at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3) Emitted ‘error’ event at: at Process.ChildProcess.\_handle.onexit (internal/child\_process.js:246:12) at onErrorNT (internal/child\_process.js:415:16) [… lines matching original stack trace …] at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3) npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! websdk-local@1.9.5 start: `set NODE_ENV=development && set BABEL_ENV=development && webpack serve --config webpack.config.dev.js` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the websdk-local@1.9.5 start script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in: npm ERR! /home/centos/.npm/\_logs/2021-05-23T03\_37\_37\_009Z-debug.log ---
**Author:** ![vaarunkumar13](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/vaarunkumar13/32/27415_2.png) [@vaarunkumar13](https://devforum.zoom.us/u/vaarunkumar13)\ **Post date:** [May 23, 2021, 7:36am UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/4 "2021-05-23T07:36:26Z")
Same error im also getting, when I run the application with the npm run start command line I get errors: i install npm also (npm install) > websdk-local@1.9.5 start /home/userName/Documents/code/hack/sample-app-web/Local > set NODE\_ENV=development && set BABEL\_ENV=development && webpack serve --config webpack.config.dev.js https false disableCORP true ℹ ｢wds｣: Project is running at [http://0.0.0.0:9999/](http://0.0.0.0:9999/) ℹ ｢wds｣: webpack output is served from /static ℹ ｢wds｣: Content not from webpack is served from /home/varun/Documents/code/hack/sample-app-web/Local events.js:292 throw er; // Unhandled ‘error’ event ^ Error: spawn chrome ENOENT at Process.ChildProcess.\_handle.onexit (internal/child\_process.js:267:19) at onErrorNT (internal/child\_process.js:469:16) at processTicksAndRejections (internal/process/task\_queues.js:84:21) Emitted ‘error’ event on ChildProcess instance at: at Process.ChildProcess.\_handle.onexit (internal/child\_process.js:273:12) at onErrorNT (internal/child\_process.js:469:16) at processTicksAndRejections (internal/process/task\_queues.js:84:21) { errno: ‘ENOENT’, code: ‘ENOENT’, syscall: ‘spawn chrome’, path: ‘chrome’, spawnargs: [‘[http://127.0.0.1:9999](http://127.0.0.1:9999)’ ] } npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! websdk-local@1.9.5 start: `set NODE_ENV=development && set BABEL_ENV=development && webpack serve --config webpack.config.dev.js` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the websdk-local@1.9.5 start script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in: npm ERR! /home/userName/.npm/\_logs/2021-05-23T07\_33\_56\_833Z-debug.log ---
**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:** [May 24, 2021, 3:57pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/5 "2021-05-24T15:57:05Z")
Hey @varsha.lodha , @vaarunkumar13 , @epenyblaise , Thanks for reporting this. We will investigate and get back to you. -Tommy ---
**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:** [May 24, 2021, 4:47pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/8 "2021-05-24T16:47:19Z")
Hey @varsha.lodha , @vaarunkumar13 , @epenyblaise , I was not able to reproduce this issue. I cloned the [sample app](https://github.com/zoom/sample-app-web), then ran `npm install` inside the `/sample-app-web/Local` directory, and then ran `npm run start`. Here is my output: ```auto $ npm run start > websdk-local@1.9.5 start > set NODE_ENV=development && set BABEL_ENV=development && webpack serve --config webpack.config.dev.js https false disableCORP true ℹ ｢wds｣: Project is running at http://0.0.0.0:9999/ ℹ ｢wds｣: webpack output is served from /static ℹ ｢wds｣: Content not from webpack is served from /Users/tommygaessler/Code/sample-app-web/Local ℹ ｢wdm｣: asset index.min.js 4.52 MiB [emitted] (name: index) asset meeting.min.js 4.52 MiB [emitted] (name: meeting) runtime modules 51.7 KiB 26 modules modules by path ./ 4.37 MiB modules by path ./node_modules/ 4.36 MiB 30 modules modules by path ./js/*.js 7.81 KiB ./js/index.js 4.8 KiB [built] [code generated] ./js/meeting.js 3.01 KiB [built] [code generated] external "React" 42 bytes [built] [code generated] external "ReactDOM" 42 bytes [built] [code generated] external {"commonjs":"lodash","amd":"lodash","root":"_","var":"_"} 42 bytes [built] [code generated] external "Redux" 42 bytes [built] [code generated] external "ReduxThunk" 42 bytes [built] [code generated] webpack 5.28.0 compiled successfully in 3327 ms ℹ ｢wdm｣: Compiled successfully. ``` Make sure you are running `npm install` inside the `Local` directory. Thanks, Tommy ---
**Author:** ![epenyblaise](https://avatars.discourse-cdn.com/v4/letter/e/9e8a1a/32.png) [@epenyblaise](https://devforum.zoom.us/u/epenyblaise)\ **Post date:** [May 25, 2021, 2:06pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/9 "2021-05-25T14:06:06Z")
Hi @tommy , @alexmayo , I ran npm install inside the Local directory and then when I ran npm run start command line I no longer get error. Thank you for help ---
**Author:** ![epenyblaise](https://avatars.discourse-cdn.com/v4/letter/e/9e8a1a/32.png) [@epenyblaise](https://devforum.zoom.us/u/epenyblaise)\ **Post date:** [May 25, 2021, 2:33pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/10 "2021-05-25T14:33:40Z")
Hi @vaarunkumar13 , @varsha.lodha , You need just ran npm install inside /sample-app-web/CDN and then ran npm run start. Here is my output : ``` npm run start > websdk-cdn@1.9.5 start > concurrently "http-server -a 0.0.0.0 -p 9999 -c-1 -o index.html" [0] Starting up http-server, serving ./ [0] Available on: [0] http://192.168.56.1:9999 [0] http://127.0.0.1:9999 [0] http://192.168.1.50:9999 [0] Hit CTRL-C to stop the server [0] open: http://127.0.0.1:9999/index.html [0] [2021-05-25T13:59:15.327Z] "GET /" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36" [0] (node:194) [DEP0066] DeprecationWarning: OutgoingMessage.prototype._headers is deprecated [0] (Use `node --trace-deprecation ...` to show where the warning was created) [0] [2021-05-25T13:59:15.934Z] "GET /js/vconsole.min.js" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36" [0] [2021-05-25T13:59:15.940Z] "GET /js/tool.js" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36" [0] [2021-05-25T13:59:15.956Z] "GET /js/index.js" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36" [0] [2021-05-25T13:59:22.753Z] "GET /favicon.ico" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36" [0] [2021-05-25T13:59:23.617Z] "GET /index.html" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36 Edg/90.0.818.66" [0] [2021-05-25T13:59:24.474Z] "GET /js/tool.js" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36 Edg/90.0.818.66" [0] [2021-05-25T13:59:24.487Z] "GET /js/vconsole.min.js" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36 Edg/90.0.818.66" [0] [2021-05-25T13:59:24.685Z] "GET /js/index.js" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36 Edg/90.0.818.66" [0] [2021-05-25T13:59:35.602Z] "GET /favicon.ico" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36 Edg/90.0.818.66" ``` ---
**Author:** ![alexmayo](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/alexmayo/32/27289_2.png) [@alexmayo](https://devforum.zoom.us/u/alexmayo)\ **Post date:** [May 26, 2021, 10:26am UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/11 "2021-05-26T10:26:48Z")
Hi @epenyblaise, This is fine and is the expected output. Thanks, Alex ---
**Author:** ![MaxM](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/maxm/32/42303_2.png) [@MaxM](https://devforum.zoom.us/u/MaxM)\ **Post date:** [May 26, 2021, 10:35pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/12 "2021-05-26T22:35:56Z")
Let us know if you have any questions @epenyblaise Max ---
**Author:** ![epenyblaise](https://avatars.discourse-cdn.com/v4/letter/e/9e8a1a/32.png) [@epenyblaise](https://devforum.zoom.us/u/epenyblaise)\ **Post date:** [May 27, 2021, 2:18pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/13 "2021-05-27T14:18:48Z")
Hi @MaxM, I have question not for this topic but for another topic. It is obligated to [generate signature](https://marketplace.zoom.us/docs/sdk/native-sdks/web/build/signature) from backend for join meetings and join webinar ? I created another topic for this because i have issue, when i ran node function.js i get errors : ``` buffer.js:329 throw new ERR_INVALID_ARG_TYPE( ^ TypeError [ERR_INVALID_ARG_TYPE]: The first argument must be of type string or an instance of Buffer, ArrayBuffer, or Array or an Array-like Object. Received type number (NaN) at Function.from (buffer.js:329:9) at generateSignature (/mnt/c/Users/epeny/zoom-sdk-web-1.9.5/CDN/function.js:21:22) at Object. (/mnt/c/Users/epeny/zoom-sdk-web- 1.9.5/CDN/function.js:29:13) at Module._compile (internal/modules/cjs/loader.js:1251:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:1272:10) at Module.load (internal/modules/cjs/loader.js:1100:32) at Function.Module._load (internal/modules/cjs/loader.js:962:14) at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12) at internal/main/run_main_module.js:17:47 { code: 'ERR_INVALID_ARG_TYPE' } ``` ---
**Author:** ![will.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/will.zoom/32/14417_2.png) [@will.zoom](https://devforum.zoom.us/u/will.zoom)\ **Post date:** [May 28, 2021, 3:32pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/14 "2021-05-28T15:32:36Z")
Hi @epenyblaise, Yes, you will need to generate your signature from your backend. And this is required for joining/starting Webinars via Web SDK. Let us know if you have questions about this. Thanks, Will ---
**Author:** ![epenyblaise](https://avatars.discourse-cdn.com/v4/letter/e/9e8a1a/32.png) [@epenyblaise](https://devforum.zoom.us/u/epenyblaise)\ **Post date:** [May 31, 2021, 1:40pm UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/16 "2021-05-31T13:40:44Z")
Hi @will.zoom, I will generate the signature from the backend to join / start webinars through the Web SDK. At the moment I have no questions on this topic, but I might have questions on another topic, since I am using the Zoom API for the first time. Thanks for your answer. ---
**Author:** ![MaxM](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/maxm/32/42303_2.png) [@MaxM](https://devforum.zoom.us/u/MaxM)\ **Post date:** [June 2, 2021, 1:29am UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/17 "2021-06-02T01:29:45Z")
I’m glad that helped! I’ll go ahead and close this topic now but feel free to open a new topic if you encounter any further issues or questions. Max ---
**Author:** ![MaxM](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/maxm/32/42303_2.png) [@MaxM](https://devforum.zoom.us/u/MaxM)\ **Post date:** [June 2, 2021, 1:29am UTC](https://devforum.zoom.us/t/problem-with-running-zoom-web-sdk-application/50769/18 "2021-06-02T01:29:49Z")