# iOS app crash with database and firebase (works on android)
**URL:** https://community.thunkable.com/t/ios-app-crash-with-database-and-firebase-works-on-android/76559
**Category:** Questions about Thunkable X
**Tags:** database, ios, crash
**Created:** [May 18, 2019, 8:50pm UTC](https://community.thunkable.com/t/ios-app-crash-with-database-and-firebase-works-on-android/76559 "2019-05-18T20:50:35Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@PaoloDECA](https://community.thunkable.com/u/PaoloDECA)
#### Post date: [May 18, 2019, 8:50pm UTC](https://community.thunkable.com/t/ios-app-crash-with-database-and-firebase-works-on-android/76559/1 "2019-05-18T20:50:35Z")
Hi, I have made an app for a museum. The app is also published on play store and works fine.
I tested the app with iphone and it crashes when i open the screen linked do the firebase database. The app download the filtered column on a list and, when have to show the specific row and put on container (image, label…), it crashes. I don’t understend the reason.
Here my project. Hope someone can hepl me.
Thanks
---
### Author:  [@point](https://community.thunkable.com/u/point)
#### Post date: [May 19, 2019, 4:25pm UTC](https://community.thunkable.com/t/ios-app-crash-with-database-and-firebase-works-on-android/76559/2 "2019-05-19T16:25:26Z")
This problem mostly reads if you are trying to get a value that is empty (if there is no value)
---
### Author:  [@Mark](https://community.thunkable.com/u/Mark)
#### Post date: [May 21, 2019, 11:20pm UTC](https://community.thunkable.com/t/ios-app-crash-with-database-and-firebase-works-on-android/76559/3 "2019-05-21T23:20:15Z")
@PaoloDECA, Sorry for your issues! Is there any way that you could create a really simple example project the shows the problem? Another thing you could do is check on the '`Error`" blocks from your Airtable operations, to see if there are any problems there.
-Mark
---
### Author:  [@PaoloDECA](https://community.thunkable.com/u/PaoloDECA)
#### Post date: [June 2, 2019, 3:09pm UTC](https://community.thunkable.com/t/ios-app-crash-with-database-and-firebase-works-on-android/76559/4 "2019-06-02T15:09:19Z")
Hello, I solved the probleo on iOS. It was a variable linked to notthing. On android it worked normally, not on android. I will publish the porject. Thanks for helping 😉
---
### Author:  [@ioannis](https://community.thunkable.com/u/ioannis)
#### Post date: [November 8, 2024, 12:13pm UTC](https://community.thunkable.com/t/ios-app-crash-with-database-and-firebase-works-on-android/76559/5 "2024-11-08T12:13:35Z")