# Perspective components in 8.1 run error **URL:** \ **Category:** Module Development\ **Created:** [November 12, 2020, 6:38am UTC](https://forum.inductiveautomation.com/t/perspective-components-in-8-1-run-error/40573 "2020-11-12T06:38:02Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![jiawei.liu](https://avatars.discourse-cdn.com/v4/letter/j/bb73d2/32.png) [@jiawei.liu](https://forum.inductiveautomation.com/u/jiawei.liu)\ **Post date:** [November 12, 2020, 6:38am UTC](https://forum.inductiveautomation.com/t/perspective-components-in-8-1-run-error/40573/1 "2020-11-12T06:38:02Z")
first, my English is pretty limited… I’m trying to build ignition-sdk-examples perspective-component module. I successfully compile the example and create the .modl file. However, when I install the example module into ignition and try to run the designer. I get the exception in ignition “Exception while starting up module “org.fakester.radcomponent”.” I unzipped the perspective-component-1.0.0.jar file. It’s empty, only one folder “META-INF”, it seems that the jar have not been got from “Nexus Repository” ? Does anybody have any insight on how best to approach this and what specific pieces of ignition I need to be concerned with? ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [November 12, 2020, 3:43pm UTC](https://forum.inductiveautomation.com/t/perspective-components-in-8-1-run-error/40573/2 "2020-11-12T15:43:17Z")
If you're building to target 8.1, then you need to use a different base until we update the master branch: > [@Perspective components in 8.1](http://forum.inductiveautomation.com/t/perspective-components-in-8-1/40483/2): > > Perry has the latest on a fork - should land on the main repo sometime soon. ---
**Author:** ![jiawei.liu](https://avatars.discourse-cdn.com/v4/letter/j/bb73d2/32.png) [@jiawei.liu](https://forum.inductiveautomation.com/u/jiawei.liu)\ **Post date:** [November 17, 2020, 6:51am UTC](https://forum.inductiveautomation.com/t/perspective-components-in-8-1-run-error/40573/4 "2020-11-17T06:51:41Z")
Thanks, Could you let me know. If I want to create usable perspective component example now. Which version is stable? ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [November 17, 2020, 4:57pm UTC](https://forum.inductiveautomation.com/t/perspective-components-in-8-1-run-error/40573/5 "2020-11-17T16:57:18Z")
As far as I know, the version I linked. I’m not sure why your attempt isn’t building successfully. Are each of the submodules building correctly? Try `./gradlew :web:build`, to specifically build the web submodule, then check its `build/` directory. ---
**Author:** ![jiawei.liu](https://avatars.discourse-cdn.com/v4/letter/j/bb73d2/32.png) [@jiawei.liu](https://forum.inductiveautomation.com/u/jiawei.liu)\ **Post date:** [November 18, 2020, 8:48am UTC](https://forum.inductiveautomation.com/t/perspective-components-in-8-1-run-error/40573/6 "2020-11-18T08:48:17Z")
It can be successfully built for a single submodule. [web build log.txt](https://forum.inductiveautomation.com/uploads/short-url/bAUHihlVfllqgdZeNJgdU4rdeID.txt) (3.4 KB) , this is web module build log. [build log 20201118.txt](https://forum.inductiveautomation.com/uploads/short-url/arYvoZFUoUWY637EhPyFDjByHyW.txt) (11.7 KB) , this is perspective-component module build log. [wrapper.txt](https://forum.inductiveautomation.com/uploads/short-url/31qzKqblOuxSRRk9wUTcWHyifr8.txt) (3.9 KB) , this is log whe module install into ingnition. Or what information can I provide to help for troubleshoot the problem, please let me know, thanks ---
**Author:** ![j.abrante](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/j.abrante/32/10431_2.png) [@j.abrante](https://forum.inductiveautomation.com/u/j.abrante)\ **Post date:** [November 23, 2020, 6:24pm UTC](https://forum.inductiveautomation.com/t/perspective-components-in-8-1-run-error/40573/7 "2020-11-23T18:24:12Z")
I have the same problem with the “ComponentBuilder.withPaletteCategory” ---
**Author:** ![j.abrante](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/j.abrante/32/10431_2.png) [@j.abrante](https://forum.inductiveautomation.com/u/j.abrante)\ **Post date:** [November 24, 2020, 8:50am UTC](https://forum.inductiveautomation.com/t/perspective-components-in-8-1-run-error/40573/8 "2020-11-24T08:50:11Z")
this is the solution. Now work