URGENT: Production app crashing after XCode update

Question

mikewillard87 OP

Created Oct ’21

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Hello,

I currently have an app published to the App Store.

Today, I updated XCode on my laptop and did a build. Now, the production version of my app will not open. It just goes to a black screen, then crashes. I suspect the issue might be caused by Firebase/Crashlytics, but I have no idea how to debug this. When I load up a build using XCode, it works fine. It is only the production app that is crashing. I've attached a crash report file.

My app is called "Tracking" and uses CloudKit, with Firebase/Crashlytics. I've had issues like this with Crashlytics before where it crashes on launch, but with this being in production I'm not sure how to debug it, and I would like to be able to fix it without having to push out an update.

Please help! Mike

Tracking-2021-10-03-190232.ips.beta.crash

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Answer 1

mikewillard87 OP

Oct ’21

Quick update, I was able to reproduce on a phone that is having this issue. The issue is that container.fetchUserRecordID is never hitting it's callback. I have a number of places in my code that depend on the iCloud user ID, so this is causing the application to hang. Looks like a possible hiccup in iCloud... I'm working to fix my app so it doesn't hang in this case but hopefully they will fix iCloud soon.

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