How To Read Crashlytics?

I just get to know Fabric and integrated it into my project and trying to see how it brings value to me. I've used Crashlytics.crash(), and got the below 'error log' but I'm wonder

Solution 1:

I suggest that adding more custom logs for crashlytics. You could find document in Enhance Crash Reports.

Some bug could be fixed with stack trace information, but many bugs need more custom logs to figure out why they crash.

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An crash example image, which includes custom logs inside.