I have a weird problem with my app. I needed to update the metadata on App Store connect and uploaded a new build to App Store. The only thing that was changed in code is two strings with version number. Everything else is exactly the same as a version that is live on the App Store (which works fine). I got a rejection with 2.1.0 Performance: App Completeness reason, turned out my app crashes on launch on reviewers device. I thought that this maybe a one time problem and tried to upload a new build with same results. Attached crash report. crash report Looks like Facebook SDK(?) crashing the app? And what is about Realm? The problem is I can't reproduce the crash anywhere. Simulator or 5 real devices including same phone model as in crash log. Tried different combinations of Debug/Release, setting Exception Breakpoints without any luck. Will be really thankful for any insight on how to approach this problem or what is going on here. Thank you very much!