# Critical error when using animation **URL:** \ **Category:** Questions about Thunkable X\ **Created:** [December 13, 2019, 1:46pm UTC](https://community.thunkable.com/t/critical-error-when-using-animation/365941 "2019-12-13T13:46:25Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![Mark](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/mark/32/18133_2.png) [@Mark](https://community.thunkable.com/u/Mark)\ **Post date:** [December 14, 2019, 12:22am UTC](https://community.thunkable.com/t/critical-error-when-using-animation/365941/3 "2019-12-14T00:22:29Z")
This is a known issue in Android. Many Lottie animation files are created from a tool called `bodymovin`. A little while back that tool was updated and and started generating files in a slightly different way. These new files exposed a bug in the Android version of the 3rd party package that we (indirectly) use to render those animations. We’ve been waiting a while for that package to get updated and incorporated into Expo (one of our primary frameworks). That recently happened. We hope to be able to update to the latest version of Expo sometime near the beginning of the year. Sorry for all the Android Lottie problems and thanks for your patience. -Mark --- _[View the full topic](https://community.thunkable.com/t/critical-error-when-using-animation/365941)._