Analysis crash info about the Flutter release app

How to get useful info about the crash in the released app created by Flutter?

In the Firebase Crashlytics section can't show where the dart code crashed.

I found App.framework and App.frameword.DSYM would be created when Archive production app.

After run command below:

dwarfdump --arch arm64 ./App.frameword.DSYM >> ./xxx-dart-symbol-map.log

I found some useful info in the log file, something like this:

0x0006552f:   DW_TAG_subprogram
                DW_AT_abstract_origin   (0x0000b738 "CustomWidget.getCardFromBox")
                DW_AT_low_pc    (0x00000000002806e0)
                DW_AT_high_pc   (0x000000000028121c)

0x00065544:     DW_TAG_inlined_subroutine
                  DW_AT_abstract_origin (0x0000009c "_GrowableList.add")
                  DW_AT_low_pc  (0x00000000002808c8)
                  DW_AT_high_pc (0x0000000000280944)
                  DW_AT_call_file   ("package:app/screens/top/widget/custom_widget.dart")
                  DW_AT_call_line   (169)

I think 0x0006552f is a ??? address of the CustomWidget.getCardFromBox method. But the Firebase doesn't show any information like above.

Bitcode isn't used.