# App uploaded to testflight crashes

**URL:** <https://forums.fusetools.com/t/app-uploaded-to-testflight-crashes/7945>\
**Category:** How-to Discussions\
**Created:** [December 3, 2019, 4:39am UTC](https://forums.fusetools.com/t/app-uploaded-to-testflight-crashes/7945 "2019-12-03T04:39:20Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![dlwovlf12](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@dlwovlf12](https://forums.fusetools.com/u/dlwovlf12)\
**Post date:** [December 3, 2019, 4:39am UTC](https://forums.fusetools.com/t/app-uploaded-to-testflight-crashes/7945/1 "2019-12-03T04:39:21Z")

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I did the FCM Background in xcode and uploaded my app to testflight.

However, the downloaded app always shows ‘App crash’ when pressing the home button (entering background).

The xcode version has been tested with 11.2.1, 11.0, 10.3, and 10.2, but they all happen the same.

Also, this App Crash does not occur in Debug builds, only in release apps downloaded from Testflight.

How can I solve this?

help me please…ㅠ\_ㅠ

The picture below is a crash report extracted from debug zombie.

 ![03](https://canada1.discourse-cdn.com/flex035/uploads/fusetools1/original/1X/d3f56d1473fcdc27b29fc99701bedbd2b6fa5d68.png)

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<div class="post-metadata">

**Author:** ![aeq](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/aeq/32/129_2.png) [@aeq](https://forums.fusetools.com/u/aeq)\
**Post date:** [December 6, 2019, 6:20am UTC](https://forums.fusetools.com/t/app-uploaded-to-testflight-crashes/7945/2 "2019-12-06T06:20:00Z")

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Have you tried debug\_log() for Uno code and console.log for JS code in your modules code to find where the crash occurs?

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<div class="post-metadata">

**Author:** ![dlwovlf12](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@dlwovlf12](https://forums.fusetools.com/u/dlwovlf12)\
**Post date:** [December 6, 2019, 7:37am UTC](https://forums.fusetools.com/t/app-uploaded-to-testflight-crashes/7945/3 "2019-12-06T07:37:33Z")

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Sure.

he app downloaded from testflight works fine, but when I pressed the home button, the app crashes.

However, building to debug mode, no app crashes when pressed the home button.

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<div class="post-metadata">

**Author:** ![aeq](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/aeq/32/129_2.png) [@aeq](https://forums.fusetools.com/u/aeq)\
**Post date:** [December 6, 2019, 8:54am UTC](https://forums.fusetools.com/t/app-uploaded-to-testflight-crashes/7945/4 "2019-12-06T08:54:51Z")

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Are you debugging a debug or release version of your fuse app?

Did you do `uno build -t=iOS -configuration=release -adebug` or `uno build -t=iOS -adebug` when debugging?

What module(s) are you using?