There are some crashes being reported on firebase crashlytics from my app. I am basically unable to replicate them. Just want the basic idea what these crashes actually is? How they get generated? The basic idea behind the crash message?

Using Swift
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2

You might look here "specialized thunk for @callee_guaranteed"

You might google "thunk for @escaping @callee_guaranteed "

You might google EXC_BREAKPOINT

You might post more of your crashlog at the Apple dev forum.