# Native Android app crashes on open **URL:** https://community.thunkable.com/t/native-android-app-crashes-on-open/1388113 **Category:** Questions about Thunkable X **Created:** [July 9, 2021, 11:35pm UTC](https://community.thunkable.com/t/native-android-app-crashes-on-open/1388113 "2021-07-09T23:35:10Z") **Posts on this page:** 1 **Showing post:** 3
### Author: ![catsarisky](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/catsarisky/32/100661_2.png) [@catsarisky](https://community.thunkable.com/u/catsarisky) #### Post date: [July 10, 2021, 12:49am UTC](https://community.thunkable.com/t/native-android-app-crashes-on-open/1388113/3 "2021-07-10T00:49:40Z")
That’s pretty straightforward code, and although I suggested that not checking for null might be a problem, I can’t cause the crash with sample code. I wonder if this is the same bug reported here: > [@App keeps crashing on Android APK & Live](https://community.thunkable.com/t/app-keeps-crashing-on-android-apk-live/1309554/28): > > This is what I did for the web viewer to work (DnD UI) to make it work. It never worked good if set to invisible. [image] It looked like the “navigate to” blocks were the problem initially (which was really weird!), but turned out to be an invisible web viewer problem, and it was an android specific problem. Any chance you’ve got an invisible web viewer somewhere on one of the screens you’re supposed to be navigating to? --- _[View the full topic](https://community.thunkable.com/t/native-android-app-crashes-on-open/1388113)._