# Thunkable Test App Crashes If I Use device bricks
**URL:** https://community.thunkable.com/t/thunkable-test-app-crashes-if-i-use-device-bricks/209271
**Category:** Questions about Thunkable X
**Tags:** beginner
**Created:** [September 3, 2019, 11:33pm UTC](https://community.thunkable.com/t/thunkable-test-app-crashes-if-i-use-device-bricks/209271 "2019-09-03T23:33:24Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@lackmey](https://community.thunkable.com/u/lackmey)
#### Post date: [September 3, 2019, 11:33pm UTC](https://community.thunkable.com/t/thunkable-test-app-crashes-if-i-use-device-bricks/209271/1 "2019-09-03T23:33:24Z")
My Thunkable Live Test App Just Immediately Crashes Infinitely if i open an app that uses device bricks. If i re open the Thunkable live app, it just crashes again. Why does this happen?
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### Author:  [@actech](https://community.thunkable.com/u/actech)
#### Post date: [September 4, 2019, 6:32am UTC](https://community.thunkable.com/t/thunkable-test-app-crashes-if-i-use-device-bricks/209271/2 "2019-09-04T06:32:55Z")
See
> [@Lottie not showing?](http://community.thunkable.com/t/lottie-not-showing/20335):
>
> Lottie isn’t working for me, same goes for images, I have correctly uploaded the Lottie animation to my…app workshop…IDE? (Idk what to call the editor) and I have selected the animation and it shows up in the editor (the animation even plays it self out and loops) but it doesn’t appear on my phone nor does it show in the companion app it just acts if it’s not there, like no big white space it just acts as if I haven’t placed the Lottie animation
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### Author:  [@jane](https://community.thunkable.com/u/jane)
#### Post date: [September 4, 2019, 10:59am UTC](https://community.thunkable.com/t/thunkable-test-app-crashes-if-i-use-device-bricks/209271/3 "2019-09-04T10:59:55Z")
Hi there,
What device are you testing your app on?
What device blocks are you using?
Could you copy the URL of your app project from your browser and send it to me?
Thanks,
Jane
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### Author:  [@ioannis](https://community.thunkable.com/u/ioannis)
#### Post date: [November 8, 2024, 12:11pm UTC](https://community.thunkable.com/t/thunkable-test-app-crashes-if-i-use-device-bricks/209271/4 "2024-11-08T12:11:40Z")