iOS app reporting crash in checkViewAndEvaluate

[Stefan-Fredriksson]

Hello

We recently published an app to the App Store using PWABuilder to wrap our web app in an iOS app shell. We've noticed that the app is reporting regular crashes in the app analytics and we're unsure why.

Here is the crashlog:

It looks like it crashes in the checkViewAndEvaluate function, which looks like this:

We were thinking that if either "event" or "detail" were nil then the crash would occur in the string interpolation. We tried adding a check for it in the if-statement but it didn't seem to help.
We're unable to replicate the issue on our end. Has anyone encountered this issue before and know of a way to fix it?

Kind regards