TestFlight not providing crash log - ios

For a certain crash I am only getting TestFlight feedback and not the crash log. Meaning I cannot open the crash in Xcode to figure out what the issue is. Is there a reason for this?
How can I get the crash log?

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How to get crash reason in Xcode Crash log system?

I got a crash in my test flight version of an iOS application, but when I check the Xcode crash log system, I am getting the crashed line and crashed function name. But I was not able to find the reason of crash. Does anybody know how to find out the reason of the crash occurred?
Here is the screenshot of the crash log of Xcode -> Organiser.
From this I am not getting the crash reason.
There is a way to show the report in Finder, as per https://help.apple.com/xcode/mac/11.4/index.html?localePath=en.lproj#/devc8ced2ea3 by Control+Clicking in the list of crash reports on the left.
Please update your question with the .crash file, which should provide full information about the crash.
The function that actually crashed is objc_msgSend. The most likely cause is that you sent a message to an object that had a different type than you and the compiler expected.

iOS app reported to be crashing by some end user. No clue on how to exploit crash report

Some end users report a crash on published application.
In spite of all our efforts, no way to reproduce it. And crash reports from Xcode do not help much.
All that we have is: "FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK"
See joined picture.
see here details of the crash as reported in Xcode

how to understand this XCODE crash log

My game in the appstore crashes from time to time. I get these crash reports from the Crashes Organizer. They are partially symbolicated. The problem is that the part where it's not symbolicated is the part I need to understand the most. How can I make sense of the address (0x100054000) in this crash log?

Could not find crash in Symbolicating iPhone App Crash Reports

Sample Iphone App Crash Report
Hi this is Symbolicating iPhone App Crash Reports image. I could not found where is crash so can u help me find crash
Use Symbolicatecrash tool, you can check the link to know how to use the tool to symbolicate your crash report.
As far as your crash is concern, it happened in thread 0 however to know exactly what went wrong in code, you need to symbolicate your crash because crash log is only showing addresses.

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My app is behaving in a similar way has NSZombie enabled.it is crashing but crash logs are not generated. I have cross checked many times Nszombie is not enabled.So pls let me know how to fix this issue. To be more exact app gets hanged / frozen instead of quitting the application.

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