# Custom Plugin Ionic 4

**URL:** <https://forum.ionicframework.com/t/custom-plugin-ionic-4/169422>\
**Category:** ionic-v3\
**Created:** [July 23, 2019, 9:46am UTC](https://forum.ionicframework.com/t/custom-plugin-ionic-4/169422 "2019-07-23T09:46:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![abhi06](https://avatars.discourse-cdn.com/v4/letter/a/ec9cab/32.png) [@abhi06](https://forum.ionicframework.com/u/abhi06)\
**Post date:** [July 23, 2019, 9:46am UTC](https://forum.ionicframework.com/t/custom-plugin-ionic-4/169422/1 "2019-07-23T09:46:41Z")

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Migrating Ionic V3 Custom plugin to Ionic V4 getting following error.

 ![image](https://global.discourse-cdn.com/ionicframework/original/3X/9/9/99661023f2787f9e904766bc8db54523fb4f94cf.png)