# When I open Multiple pages(More then 20) basic 3D ball pages at the same time, the page reports an error **URL:** \ **Category:** CesiumJS\ **Created:** [August 21, 2021, 4:05am UTC](https://community.cesium.com/t/when-i-open-multiple-pages-more-then-20-basic-3d-ball-pages-at-the-same-time-the-page-reports-an-error/14932 "2021-08-21T04:05:01Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Ray](https://avatars.discourse-cdn.com/v4/letter/r/e9a140/32.png) [@Ray](https://community.cesium.com/u/Ray)\ **Post date:** [August 21, 2021, 4:05am UTC](https://community.cesium.com/t/when-i-open-multiple-pages-more-then-20-basic-3d-ball-pages-at-the-same-time-the-page-reports-an-error/14932/1 "2021-08-21T04:05:01Z")
Compute Configuration | cpu | Memory | disk | gpu | | --- | --- | --- | --- | | 8\*i7-7700 360Ghz | 16GB | 250GB | NVIDIA GeForce GT 730 | ## browser：Chrome newest **Two kinds of errors** **First kind** **pic** ![image](https://global.discourse-cdn.com/cesium/original/3X/1/a/1ab67a97d3236d42d570ffb3a3a4169c9bcb2850.png) Text An error occurred while rendering. Rendering has stopped. DeveloperError: Expected width to be greater than 0, actual value was 0 ```auto Error at new DeveloperError (http://192.168.100.95:18030/test/static/libs/CesiumUnminified/Cesium.js:83:13) at Function.Check.typeOf.number.greaterThan (http://192.168.100.95:18030/test/static/libs/CesiumUnminified/Cesium.js:260:13) at new Texture (http://192.168.100.95:18030/test/static/libs/CesiumUnminified/Cesium.js:98320:25) at createTextures$1 (http://192.168.100.95:18030/test/static/libs/CesiumUnminified/Cesium.js:271775:37) at updateFramebuffers$4 (http://192.168.100.95:18030/test/static/libs/CesiumUnminified/Cesium.js:271868:7) at GlobeDepth.update (http://192.168.100.95:18030/test/static/libs/CesiumUnminified/Cesium.js:272071:5) at updateAndClearFramebuffers (http://192.168.100.95:18030/test/static/libs/CesiumUnminified/Cesium.js:304338:23) at executeCommandsInViewport (http://192.168.100.95:18030/test/static/libs/CesiumUnminified/Cesium.js:304072:9) at Scene.updateAndExecuteCommands (http://192.168.100.95:18030/test/static/libs/CesiumUnminified/Cesium.js:303808:7) at render (http://192.168.100.95:18030/starview/static/libs/CesiumUnminified/Cesium.js:304692:11 ``` **Second King** **pic** ![image](https://global.discourse-cdn.com/cesium/original/3X/1/8/1869dbe943668da0dcb7524fca13848b601c177f.jpeg) **text** Cesium.js:1 [Cesium WebGL] Fragment shader compile log: createAndLinkProgram @ Cesium.js:1 Cesium.js:1 WebGL: INVALID\_OPERATION: getTranslatedShaderSource: attempt to use a deleted object createAndLinkProgram @ Cesium.js:1 Cesium.js:1 [Cesium WebGL] Fragment shader translation failed. createAndLinkProgram @ Cesium.js:1 Cesium.js:1 An error occurred while rendering. Rendering has stopped. RuntimeError: Fragment shader failed to compile. Compile log: ```auto Error at new RuntimeError (http://192.168.100.95:18030/test/static/libs/Cesium/Cesium.js:1:40928) at createAndLinkProgram (http://192.168.100.95:18030/test/static/libs/Cesium/Cesium.js:1:949048) at reinitialize (http://192.168.100.95:18030/test/static/libs/Cesium/Cesium.js:1:951769) at initialize$b (http://192.168.100.95:18030/test/static/libs/Cesium/Cesium.js:1:951701) at ShaderProgram._bind (http://192.168.100.95:18030/test/static/libs/Cesium/Cesium.js:1:955514) at beginDraw (http://192.168.100.95:18030/test/static/libs/Cesium/Cesium.js:1:2544159) at Context.draw (http://192.168.100.95:18030/test/static/libs/Cesium/Cesium.js:1:2545708) at DrawCommand.execute (http://192.168.100.95:18030/test/static/libs/Cesium/Cesium.js:1:912887) at executeCommand (http://192.168.100.95:18030/test/static/libs/Cesium/Cesium.js:1:3231720) at executeCommands (http://192.168.100.95:18030/test/static/libs/Cesium/Cesium.js:1:3237516) CesiumWidget.showErrorPanel @ Cesium.js:1 :18030/test/#/Map?userId=18:1 WebGL: CONTEXT_LOST_WEBGL: loseContext: context lost ``` _ **I think webgl restrictions? You cannot open multiple cesium web pages at the same time** _ Maybe But When I try to open your online address more then 20 on this machine. `https://sandcastle.cesium.com/standalone.html#c=bY9Pa8MwDMW/ivGpgyGz6+qGQq+FHQY7+aI6Wmuq2MFSUtJPvyS9jK26vaf3058RqxkT3aiancl0MweSNHTwtXqbYOOqDyUrpkw12JdtyPbVetGJqQnZrLVPXV+qmqHyBsApdT2jkrjTEK+kEEUWcIl69xv1bRpNandPNpnIKDJ3vgfmz3SnYBvv5vw/lAu2KZ8/RqqM0xK7vDXHhwkA3s3yOaml8Anrn8nzfxfVXt6dE8xtRFEmeBwIsXTujMxUJ/cD`.A miracle happened，No error reported！！ So，Call the cesium app deployed in my environment for more than 20 times and an error will be reported，but if you open your online address more than 20 times, you will not report an error. I will try not to use the **Vue Framework** ，but to use pure HTML to implement the basic create Cesium page for testing. In the meantime, I hope to get some comments from you！！ 😃 the bat Can open more page[startOpenMultipleCesiumPage.zip](https://community.cesium.com/uploads/short-url/hcu1EFZhmFI3coIpb15i8vQvLj5.zip) (559 Bytes) ---
**Author:** ![Ray](https://avatars.discourse-cdn.com/v4/letter/r/e9a140/32.png) [@Ray](https://community.cesium.com/u/Ray)\ **Post date:** [August 22, 2021, 4:14am UTC](https://community.cesium.com/t/when-i-open-multiple-pages-more-then-20-basic-3d-ball-pages-at-the-same-time-the-page-reports-an-error/14932/2 "2021-08-22T04:14:19Z")
I solved it. Container width and height must be set to the default value. As follows. ```auto .mapViewer { height: 100%; width: 100%; margin: 0; padding: 0; overflow: hidden; } ``` Because the width passed in when webgl initializes the texture must be greater than 0. ---
**Author:** ![sam.rothstein](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/sam.rothstein/32/6584_2.png) [@sam.rothstein](https://community.cesium.com/u/sam.rothstein)\ **Post date:** [August 23, 2021, 1:39pm UTC](https://community.cesium.com/t/when-i-open-multiple-pages-more-then-20-basic-3d-ball-pages-at-the-same-time-the-page-reports-an-error/14932/3 "2021-08-23T13:39:15Z")
@Ray Congratulations on solving the issue! Your solution looks robust 🚀 I will share it with the community if similar questions arise. -Sam